Gary Con 2025: Day 1 - Chainmail & Balrogs

The moathouse model for the Battle for the Moathouse 

Finding myself with a some rare free time, I dove back into my unfinished blog posts, and found this one covering my highlights from the first official day of Gary Con XVII, Thursday March 19th, 2025, where I played in two wargames and ran an RPG. Better late than never...

See the preceding post in this series here: Day 0

(1) For my first game in the morning, I played in the epic Battle for the Moathouse, a Chainmail scenario that recreates  a piece of Greyhawk history; specifically, the assault that creates the Ruined Moathouse in T1 The Village of Hommlet. This was refereed by the indefatigable Paul Stormberg, who organizes the entire Legends of Wargaming hall and game series every year.

Convention event listing description:

"Legends of Wargaming event! This Chainmail fantasy battle recreates one of the battles fought in the greater struggle against the Temple of Elemental Evil. After the Battle of Emridy Meadows and the Temple itself, a small force marched on the Moathouse, an outpost of Elemental Evil. Join the forces of weal and their righteous cause or serve Elemental Evil to crush the armies of good!"

I was on the side on the Forces of Woe (Elemental Evil), defending the Moathouse against the Forces of Weal. If I recall correctly at this late date, the game fairly faithfully recreated the course of the original events, with Weal doing pretty well storming the Moathouse. Woe was still in control of the Moathouse at the end of the allotted time, which I think was technically a win for us (i.e., surviving a certain number of rounds), but if the game had gone on just a little longer our leaders would have been forced to flee.

Photos:

The lineup for the Forces of Woe

The Forces of Weal advance on the Moathouse

Woe's Troll goes down on the battlefield

(2) In the afternoon I ran my Party of Balrogs OD&D scenario, the first of two games I was scheduled to run. This was second time running Party, the first being the year before at Gary Con 2024. That game had a great group of players, but they completed the scenario more quickly than I had anticipated, so I revised/added a few things to it for this year. 

Here's my convention blurb for the game:

"The 1974 D&D rules allowed for a character to be "virtually anything", even a balrog. This adventure takes this to 11 by having *all* of the PCs be balrogs! Ensorcelled to serve a wizard deep in a megadungeon, the spell is now broken. Can you get past the other guardians and make the wizard pay? This game by the Zenopus Archives celebrates 50 years of D&D. Balrog PCs provided."

I again had a great group of players, including one fellow who had played in some of my games previously. They undertook their mission with gusto and creative play and were successful in their mission. A thank you to all of them: Shawn (Stan the Goremonger), Lauren (Murdertina), Bryon (Billy the Balrog), Jeff N. (Pip), Matt (Thalroth), and Jeff W. (Ny Olog)

I'm running this scenario again this year at Gary Con 2026; the event page for it is here: Party of Balrogs GC 2026.

Unfortunately, I didn't take or receive any table photos for this game.

Michael Mornard, who played the original Balrog character in Greyhawk, happened to be GMing the next game I was scheduled to play (see below). To show my appreciation for originating the concept of Balrogs as PCs, I found him before his game and was able to introduce myself and buy him a beer to thank him for his inspiration.

(3) My evening game was Michael Mornard's Battle on the Ice, another Chainmail game, but historical rather than fantasy, based on the actual battle of the same name. This was played on the famous sand table in the Legends of Wargaming hall, with white coloring added to simulate the ice. I was part of the team on the side of Prince Nevsky, who won the actual battle, but unlike the real battle, we didn't fight on the actual ice, but rather tried to defend a position on an island, which probably contributed to our loss. However, our biggest mistake was separating our commander from his cavalry troops, without realizing this would render him much more vulnerable.

Convention Blurb: 

"Legends of Wargaming sand table event! This Chainmail historical scenario will be conducted on the Gary Con Sand Table. Refight the glorious battle of the Teutonic Knights vs. Prince Alexander Nevsky of Novgorod! The referee will be none other than Michael Mornard an early participant in LGTSA games and the playtesting of the Dungeons & Dragons game."

Photos:

Mike talking about the scenario prior to us placing our forces 

My team. I think Mike took this photo. I'm on the far right, wearing a Vecna tee.

The two opposing forces facing each other across the field

The other side advancing towards our island

Mike in action refereeing

Also in this series:

Gary Con 2025: Day 0

Gary Con 2025: Day 2 (forthcoming)

Previous Gary Con convention summaries:

Gary Con 2023 (unfinished): Day 0

Gary Con 2022: Day 1 --- Day 2 --- Days 3 and 4

Gary Con 2019 (unfinished): Day 1 --- Day 2 (part 1)

"The Making of Original D&D: 1970-1977": Out Today!

 

Promo ad showing pages from the Greyhawk Supplement (1975)

Today is the day! As a reminder, today is the released date of highly anticipated book, The Making of Original Dungeons & Dragons: 1970-1977, a massive (almost 600 pages) tome reprinting the original D&D booklets & supplements; the original draft of D&D and a wealth of other related documents & correspondence. More details about the contents can be found in two of my earlier posts:

"The Making of Original D&D: 1970-1977": Table of Contents

"The Making of Original D&D: 1970-1977": What Might the Precursors Be?

If you haven't ordered the book yet, it can be found here on Amazon:

The Making of Original Dungeons & Dragons: 1970-1977

Recent Promos:

The official D&D account has posted several promo photos over the last few weeks, including the one at the top of this post. Here are two of the others:

Promo ad showing pages from Chainmail 2nd Edition

Promo ad showing correspondence between Gygax & Arneson

See also these earlier posts:

"How Dungeons & Dragons Started" (video about the book)

"The Making of Original D&D: 1970-1977": Everything we know about this upcoming WOTC book

Playing at the World revised edition out in July

The Making of OD&D Book: What Might the D&D "Precursors" Be?

 

The Making of OD&D comes out in less than a month, and the approximately 600-page tome was revealed "in the flesh" last week on the official D&D account on Twitter, with the above photo of an advance copy captioned: "The Making of Original Dungeons & Dragons... it's BIG!" 

If you haven't ordered the book yet, it can be found on Amazon for $99, and with a price-drop guarantee:

The Making of Original Dungeons & Dragons: 1970-1977

Based on the Table of Contents that I re-posted at the beginning of this month, let's take a closer at what might be in the interesting section "Part 1: Precursors", which covers the ancient era before the first draft of D&D (1973). I don't have any particular insider knowledge, so these are simply my best educated guesses based on titles alone:

   Grayte Wourmes (page 10) 

   Fittingly for a game that includes "Dragons" in the title, the Precursor section starts with material that is clearly from a series of articles about Dragons that Gary Gygax wrote in 1969-1970 for the Diplomacy zine Thangorodrim (named after the mountains home to Morgorth's fortress Angband), describing White, Black, Green, Blue and Mottled (aka Purple Worm) Dragons.

   Maps of the Great Kingdom (page 18)

    The use of plural "Maps" suggests this will include at least two maps. One may be the original Great Kingdom map from Domesday Book #9 (1970/1971), which was previously reprinted on page 32 of Playing at the World (2012) by Jon Peterson. 

    Another may be a later one showing the territories of the Great Kingdom; one version of this map was uncovered by Dave Megarry in 2017; see my post from that year titled "Megarry's Copy of the Great Kingdom Map".

    Medieval Weaponry in the Encyclopedia Britannica (page 20)

    In 2014, Jon Peterson wrote in a post on his Playing at the World blog that, "Gygax did indeed rely heavily on the 1911 Encyclopedia Britannica for medieval information in the early 1970s for certain particulars, though that would be a story for another time". So it seems we are getting that story now. 

    I also note that on EnWorld in 2002, Gygax mentioned his "set of Eleventh Edition ENCYCLOPEDIA BRITANNICA that my most honored maternal grandfather bequeathed to me". The Eleventh Edition of EB has its own Wikipedia page.

   Chainmail's Fantasy Supplement (page 26)

    This is, obviously, the fantasy section that makes up about a quarter of the Chainmail miniatures rules. From the preview page that has been shown, the book will reprint the version from the 2nd Edition, published by Guidon Games in 1972.

    Gygax on Armor (page 46)

    

    This may be an article that Gygax wrote for Panzerfaust #43, April 1971, which Jon Peterson discussed on his blog in 2014.

    The Battle of the Brown Hills (page 50)

    This is a relatively well-known Chainmail scenario between the forces of Law and Chaos that Gygax wrote up for Wargamer's Newsletter #116, published in November 1971. These days you can play in it on a sand table as part of the Legends of Wargaming series run annually at Gary Con thanks to Paul Stormberg. This year it was run in the basement of 330 Center Street, where Gygax lived when he worked on the initial D&D rules.

    

    Arneson's "Medieval Braunstein" (page 54)

    In a 2014 post on the Playing at the World blog, Jon Peterson described a document with this same name "A surviving set of instructions for a 1970 medieval multiplayer game".

    

    Blackmoor Gazette and Rumermonger 2 (page 58)

    This is an issue of a campaign newsletter put out by Dave Arneson. The first issue can be seen here on the Playing at the World blog.

    

    "Points of Interest in Black Moor" (page 60)

    

    An article by Dave Arneson that originally ran in Domesday Book #13 (July 1972), and was later reprinted in the First Fantasy Campaign supplement published by Judges Guild.

    The Wizard Gaylord (page 64)

    

    Likely the same "surviving character sheet from the Blackmoor Campaign, that of Pete Gaylord's character the Wizard of the Wood (best known from the brief biography in First Fantasy Campaign)" that previously appeared on page 367 of the Playing at the World book (2012).

    Loch Gloomen (page 68)

    

    Blackmoor historian Dan Boggs described, in a 2014 post on his blog Hidden in Shadows, how in the spring of 1972, play in the Blackmoor campaign moved to an area known Loch Gloomen, or Lake Gloomy. Material from this era appears in a section titled "Loch Gloomen" in the First Fantasy Campaign. So this is likely some of the surviving original material from this era written by Arneson.

    Outdoor Survival (page 72)

    

    Excerpts from the rules of the board game Outdoor Survival, published by Avalon Hill, which was in the list of recommended Equipment in OD&D Vol 1 (Men & Magic) and heavily influenced the rules for Wilderness Exploration in Vol 3 (The Underworld and Wilderness Adventures).

    Gygax/Arneson Blackmoor Correspondence (page 76)

    Personal letters between Gary Gygax and Dave Arneson prior to the development of the first draft of D&D.

See also these earlier posts:

"The Making of Original D&D: 1970-1977": Table of Contents

"How Dungeons & Dragons Started" (video about the book)

"The Making of Original D&D: 1970-1977": Everything we know about this upcoming WOTC book

Playing at the World revised edition out in July

"How Dungeons & Dragons Started" Video

The day after I made my previous post rounding up everything we know about The Making of Original Dungeons & Dragons: 1970-1977, the forthcoming book describing the creation of the original D&D rules, the Dungeons & Dragons channel on YouTube posted an interview with Jason Tondro, a senior designer at WOTC, further detailing the contents. It's a long interview (38+ minutes) but well worth the time spent watching it, and Tondro's enthusiasm for the material covered in the book is evident. 

From this interview, it's clear that the book will include the entirety of 2nd Edition Chainmail, the map from Outdoor Survival, the "Guidon D&D" draft from 1973, the first printing of the LBBs (complete with the Tolkien references) from early 1974, and the first three supplements, among much correspondence and magazine articles.

The book can be pre-ordered here at Amazon, with a release date of June 18th:

The Making of Original Dungeons & Dragons: 1970-1977

"The Making of Original D&D: 1970-1977"Everything we know about this upcoming WOTC book

"The Making of OD&D 1970-1977" promotional book image,
showing four ribbon bookmarks!

Last December, at a panel at PAX Unplugged called "50 Years of D&D Adventures", Wizards of the Coast announced their new books for 2024, which included a surprising release tied to the 50th anniversary of D&D: The Making of Original Dungeons & Dragons: 1970-1976  (The panel was recorded & is available here; see the 57:20 mark).

"Sneak Peak" image shown during the panel presentation

The panel members indicated that the book will be over 500 pages (!), will "a replica of the original Dungeons & Dragons game, page for page", "never-before seen correspondence" between Gygax and Arneson, and historical context by Jon Peterson (of Playing at the World). The "Sneak Peek" image appearing on the screen during the presentation shows two page spreads from the book, the one to the left showing the first page of the Fantasy Supplement of Chainmail, and the one to the right showing the title page of OD&D Volume 3, The Underworld & Wilderness Adventures. And the background shows a version of the Great Kingdom map, suggesting this may appear in the book as well.

Just after this I saw Jason Tondro, a WOTC Senior Designer who started playing with Holmes Basic, and previously worked on the Deck of Many Things (which looks interesting), post on FB that he had spent "most of the last six months on it and y’all are in for some surprises". 

Then, a few days ago, WOTC provided an updated release schedule that says that the book will come out on June 18th. Interestingly, the title has now been updated to "1970-1977" in this press release and also the mock-up promotional image shown at the top of this page. Does this change mean that it will discuss Holmes Basic, released in 1977, and edited by J. Eric Holmes from the OD&D booklets?

The full description from the press release reads:

"The ultimate book showcasing D&D's inception, including Gary Gygax's never-before-seen first draft of D&D written in 1973, a curated collection of published fanzine and magazine articles contribute to D&D's origin story. Each document is introduced, described, and woven into the story by one of the game's foremost historians, Jon Peterson."

The "new news" here is that the book will also include a "draft of D&D", which is most likely the draft termed "Guidon D&D" by Peterson, and also contemporary articles. The inclusion of the draft is particularly noteworthy and exciting as this is a document that has never before been shared with the public in its entirety.

The promo image of the cover shows four ribbon bookmarks in different colors that appear to correspond to sections of the book, which are colored along the bottom of the page in the "Sneak Peek" images, with red corresponding to Chainmail and yellow corresponding to the original D&D volumes.

I saw a post on Twitter that unlike the other forthcoming WOTC books, which will be released in both physical and digital formats, this one will only have a physical release. So unfortunately no pdf option. 

So, in summary, we now know the 500 pages of this tome will cover the years 1970-1977, and include at least:

• "Gary Gygax's never-before-seen first draft of D&D written in 1973"
• "a replica of the original Dungeons & Dragons game, page for page"
• "never-before seen correspondence" between Gygax and Arneson
• "a curated collection of published fanzine and magazine articles"
• historical context by Jon Peterson

The book is already available for pre-order at Amazon for $99, but also with a price-drop guarantee:

The Making of Original Dungeons & Dragons: 1970-1977

I've already pre-ordered it myself!

Note that while The Art & Arcana Deluxe, which is the previous WOTC publication most similar in nature to this one, still has a list price of $125 on Amazon, it is currently for sale for $66. Looking at my records, the price when I pre-ordered it was $100, but with the pre-order price guarantee I got it for $63.50.

Update: 

Just out today (2/15/24) is a fascinating interview with Jason Tondro, who I quoted above, further detailing the contents of this book. From this it's clear it will include the entirety of 2nd Edition Chainmail, the "Guidon D&D" draft, the first printing of the LBBs (complete with the Tolkien references) and the first three supplements, among much other correspondence and magazine articles. It's a long interview (38+ minutes) but well worth the time spent watching it.

See also:

OD&D Discussion thread

Dragonsfoot discussion thread

EnWorld discussion thread

See also these other posts:

The Making of OD&D Book: What Might the "Precursors" Be?

The Making of OD&D Book: Table of Contents

Megarry's Copy of the Great Kingdom Map

Now at DMsGuild: Chainmail POD & July Sale

CHAINMAIL by Gary Gygax and Jeff Perren is now back "in print"...! 

Thanks to JeffB over at ODD74 for letting us know that DMs Guild and DrivethruRPG are now offering a Print-on-Demand option for Chainmail.

Get it here:

Chainmail in POD and/or PDF at DMs Guild

Or here:

Chainmail in POD and/or PDF at DrivethruRPG

As I wrote over on ODD74, from the preview, the version of Chainmail they are offering is a 3rd Edition (copyright 1975), 7th printing (April 1979), and scanned from an original rather than re-typeset like most of the OD&D booklets they are currently offering. This version is from after the Tolkien references (Hobbits/Ents/Balrogs) were altered or removed.

The print plus digital version costs the same as the print version alone, $6.99. I've ordered a copy, and will report on quality when it arrives. The total with tax and media mail shipping was $11.91.

According to Chris Holmes, his father purchased Chainmail along with the LBBs, Greyhawk, Warlock and the Dungeon boardgame from Aero Hobbies shortly after they learned about the game (Tales of Peril, page 328). And Holmes had his copy handy while preparing the Basic rulebook, as is evident from the entry for Giants, which states, "There are several ways to calculate catapult (giant) fire. This one is adapted from CHAIN MAIL", and by his inclusion of the Parry rule from Chainmail that didn't appear elsewhere in OD&D (See Part 17 of my Holmes Manuscript series).

The published rulebook also directly references Chainmail in Gary Gygax's Foreword, which is carried over from Vol 1 of the original rulebooks: "From the CHAINMAIL fantasy rules he drew ideas for a far more complex and exciting game, and thus began a campaign that still thrives as of this writing!" Chainmail also appears in the TSR product listings appearing in the back of the Holmes Basic rulebook. 

This means that I personally have known about Chainmail since the days of my original Holmes Basic set. This led me to purchase a copy, the same edition being offered now, directly from the TSR Mail Order Hobby Shop in the late '80s. I later sold this on Ebay in the late '90s when trying to downsize my collection (ha!), and later regretted that, but soon I will have a copy again.

See also:

Chainmail Announcement from Domesday Book #9

* * * * * * * * * *

Also at DMs Guild and DrivethruRPG is their annual Xmas in July sale, with many products 25% off, which means that the The Ruined Tower of Zenopus is just $1.49 until the end of the month.

Get it here:

The Ruined Tower of Zenopus at DMs Guild

Most of the classic TSR titles are included in the sale, at least in PDF format, including the PDF of Chainmail (but not the new POD). Most of the in-print stuff is not, although I note that the Rules Cyclopedia in print is $21 instead of $25.

Basic/OD&D in PDF

Basic/OD&D in Print

AD&D 1E in PDF

AD&D 1E in Print

Gamma World 1E in Print

OSR Products

(All links include my DMsGuild/DrivethruRPG affiliate number)

Chainmail Announcement from Domesday Book #9

Above is an early (perhaps the first) announcement for Chainmail, from the Domesday Book periodical, issue #9. While referred to simply as "Medieval Miniatures rules", they are by Gary Gygax and Jeff Perren, include a Fantasy Supplement "for fighting Tolkien-type battles", and are sold by Lowrys Hobbies, so there's no mistaking what it is for.

This excerpted image was posted by Rob Kuntz here on EnWorld in 2019, and its existence was earlier noted in Playing at the World, both the book (page 42) and the blog ("this issue contains the first notice of the publication of Chainmail in the Domesday Book"). I'd thought I'd share it here because I don't think a lot of folks have seen it.

For search-engine posterity, here is the transcribed text:

"Announcing a completely revised set of Medieval Miniatures rules, with a large         fantasy suppliment for fighting Tolkien-type battles, by Gary Gygax and Jeff                   Perren (of course!). For this and your wargaming needs it's                                     LOWRYS HOBBIES, Box 1123, Evansville, Indiana 47713 Giant Catalog - 50¢"

Lowrys Hobbies was the previously established Evansville-based mail-order business of Don Lowry, who in 1971 founded Guidon Games to publish Chainmail and other games; in 1972 he moved both to Belfast, Maine. Here's the cover of a 1972 Lowrys catalog still showing the Evansville address:

The "(of course!)" aside presumably refers to the fact that Perren & Gygax had published their medieval rules in an earlier issue of the Domesday Book (#4, July 1970), titled "The LGTSA Miniatures Rules". You can read more about these rules, which did not yet include a Fantasy Supplement, here on the Playing at the World blog.

The Acaeum page for the Domesday Book has issue #9 as "Date Unknown" (indicated here as "undated"), but dates the next issue as "April 1971", which would place issue #9 as earlier that that. However, this April date seems to be taken from the date of the one of the articles ("Ancients Society Report, Last Issue, 4/30/71"), which since this is at the very end of April might mean that #10 was actually published later. Playing at the World indicates that issues #8-11 came out "roughly quarterly" (page 634).

Over on the mostly defunct but still useful Tome of Treasures forum, poster scribe wrote that the April 1971 issue of International Wargamer has a full-page advertisement for Guidon Games that includes Chainmail: International Wargamer April 1971 listing at ToT.

Domesday Book #9 also contained the first map of the Great Kingdom, which eventually led to the settings for both Arneson's Blackmoor and Gygax's Greyhawk campaign. An auspicious publication!

The cover of Domesday Book #9 as shown on the Acaeum

(The above material is revised from my posts on the EnWorld thread link above).

See the following related posts:

Where on the Great Kingdom map was "The Weird Enclave of Blackmoor"? (2012)

The Land of the Great Kingdom and Environs (2014)

Megarry's copy of the Great Kingdom Map (2017)

Locations for the Tomb of Horrors on the Great Kingdom map (2018)

Gary Con XI Annotated Slideshow (2017)

I had a fantastic time at Gary Con IX last weekend! I've put the photos up in a public FB album and annotated each photo:

Gary Con IX Annotated Slideshow

The slideshow should be viewable even if you don't have a FB account. Follow the link and click on the first photo (of the Zenopus Archives badge) to start viewing the photos.

Thanks to everyone who made Gary Con happen! 

I plan to return next year and run a game - something Holmes-related.

Return of the CHAINMAIL PDF

As of today, CHAINMAIL (1971) is once again available for purchase at DrivethruRPG:

CHAINMAIL pdf

If you purchased the pdf in the past, you should be able to download the new version for free. Per Stormcrow on ODD74, the new pdf is an improved version, clean-up and with bookmarks. From the preview, the pdf is a 3rd edition (1975), 7th printing of the rules.

There's no print-on-demand option yet, but that may be coming as WOTC has been slowly adding new titles (for example, a print option for dungeon module A2 was added this week).

Holmes used Chainmail as one of his sources when assembling the manuscript of Basic. He included some rules from Chainmail that didn't appear elsewhere in OD&D, such as the Parry rule (See Part 17 of my Holmes Manuscript series).

(Links include my DTRPG affiliate # which gives me 5% if you make a purchase)

Gygaxian Armor

AD&D Armor by David C. Sutherland III

The picture above should have been included in the 1E AD&D PHB or DMG. It illustrates the nine standard types of AD&D armor as described in those books, but appeared only in the relatively obscure AD&D Dungeon Masters Adventure Log, published in 1980.

Below are the corresponding descriptions from 1E AD&D Dungeon Masters Guide, page 27, plus a few notes from the shorter descriptions given on page 165. I've reordered them & included the encumbrance and move ratings from the table on page 27, and the armor classes and cost from the PHB. These use the unarmored AC 10 system that debuted in AD&D PHB, replacing the unarmored AC 9 system of OD&D.

Padded Armor (AC 8, MV 9", 10 lbs, 4 GP) is "heavily padded, quilted coat and an additional soft leather jerkin and leggings".

Leather Armor (AC 8, MV 12", 15 lbs, 5 GP) is "shaped cuir bouli (leather hardened by immersion in boiling oil) cuirass and shoulder pieces and softer shirt and leggings" (pg 27) and "includes boots and gauntlets" (pg 165).

Studded Leather (AC 7, MV 9", 20 lbs, 15 GP) is "leather armor to which have been fastened metal studding as additional protection, usually including an outer coat of fairly close-set studs (small plates)" (pg 27), and with "an extra layer of protection at shoulder area" (pg 165).

Ring Mail (AC 7, MV 9", 25 lbs, 30 GP) is "relatively soft leather armor over padding. To the long coat of leather are sewn metal rings. This makes the coat rather heavy and bulky".

Scale Mail (AC 6, MV 6", 40 lbs, 45 GP) is "armor similar to ring mail, but overlapping scales of metal are sewn to both coat and leggings—or a skirted coat is worn. As with chain, weight falls mainly on the wearer’s shoulders and waist".

Chain Mail (AC 5, MV 9", 30 lbs, 75 GP) is "padding plus interlocking mesh armor covering the upper and lower body. Vulnerable areas have multiple thicknesses. Weight falls upon the shoulders and waist of the wearer".

Splint Mail (AC 4, MV 6", 40 lbs, 80 GP) is "light chain, greaves, and a leather coat into which are laminated vertical pieces of plate with shoulder guards".

Banded Mail (AC 4, MV 9", 35 lbs, 90 GP) is "a layered armor with padding, light chain, and series of overlapping bands of armor in vulnerable areas. Weight is somewhat distributed".

Plate Mail (AC 3, MV 6", 40 lbs, 400 GP) is "light chain with pieces of plate — cuirass, shoulder pieces, elbow and knee guards, and greaves. Weight is well distributed".

Plate armor (AC 2, MV 9", 40 lbs, 2000 GP) is "a full suit of plate which is no more weighty and a bit less bulky, considering what is known as “field plate”" [This is an optional addition that Gygax mentions; it is not illustrated above. Rules for this were later expanded in Unearthed Arcana in 1985]

On page 165, Gygax refers the reader to Charles Ffoulkes' Armour and Weapons (1909), which thanks to the internet can be viewed here.

Original D&D and the Classic D&D successors only included Leather, Chain and Plate, so the additional armor types are typically associated with AD&D. However, many of them actually appeared all the way back in Chainmail Man-to-Man Melee Table:

The AD&D Monster Manual, which uses the original AC system (unarmored AC 9) gives us a few clues for adapting these armor types to OD&D.

Halflings: "The usual protection ... consists of padded or leather armor", with an AC of 7.
Wood Elf: "They usually wear studded leather or ring mail (AC 6)".
Gnomes: "...armored with leather armor which is ringed or well studded with metal and shield (armor class 5)".

Thus, if adapting these additional types to Holmes Basic or OD&D, we might use:

Padded Armor:  AC 7, MV 9", 10 GP
Leather Armor:  AC 7, MV 12", 15 GP
Studded Leather:  AC 6, MV 9", 20 GP
Ring Mail:  AC 6, MV 9", 20 GP
Scale Mail:  AC 5, MV 6", 25 GP 
Chain Mail:  AC 5, MV 9", 30 GP
Splint Mail:  AC 4, MV 6", 40 GP
Banded Mail:  AC 4, MV 9", 45 GP
Plate Mail:  AC 3, MV 6", 50 GP
Plate Armor:  AC 2, MV 9", 200 GP 

The AC & prices for Leather/Chain/Plate come from the original list in OD&D and Holmes Basic. In AD&D, there's little functional difference between Studded Leather and Ring, other than Ring being slightly heavier and costing twice as much, so I just left them as identical on this chart.

One practical use for this table in OD&D might be for adapting AD&D modules with these armor types. 

See also: The Monster Manual is a Holmes Supplement
 
(DMs Guild links include affilitate #)