Deities & Demigods (1980)

From the back cover (of 1st to 3rd printings):

Deities & Demigods Cyclopedia

Provides the Dungeon Master with Gods, Heroes and Monsters from Myth, Fiction and Legend for use in rounding out an Advanced D&D campaign. Within this book are seventeen pantheons of divinities, each profusely illustrated. Also included are new material on Clerics' conduct and their relationship with their Deities, information on Character mortality and immortality and more!

User summary:

The 1st and 2nd Printings of this manual contained the Cthulhu and Elric (Melnibonean) Mythos. The 2nd - 4th Printings contain a thank you comment to Chaosium for the use of the material, even though the material was removed after the 2nd Printing due to an intellectual property copyright dispute.

Anecdotally according to Frank Mentzer at GenCon SoCal 2003, the Printings of this book were referred to internally at TSR as follows:

1st Printing: Squids, no thanks!
2nd Printing: Squids, with thanks!
3rd and 4th Printings: No squids, with thanks! (3rd has wizard logo, 4th has face logo)
Later Printings: No squids, no thanks!

Additional commentary on this aspect of the book can be found at: http://www.hahnlibrary.net/rpgs/faq/rgfdfaq4.html#E8

Dieties & Demigods has enjoyed numerous printings. Parties interested in the earlier Printings should definitely consult expert resources when purchasing or investigating specific, early printings.

The 1st - 4th Printings (titled Dieties & Demigods) feature the "old" cover by Erol Otus; the 5th and later Printings (titled Legends & Lore) feature the "new" cover by Jeff Easley.

1st Printing, 1980, contains 17 pantheons in 144 pages; wizard TSR logo

2nd Printing, 1980, contains 17 pantheons in 144 pages with "Special Thanks..." comment on page 4; wizard TSR logo

3rd Printing, 1980, contains 15 pantheons (back cover still says 17) in 128 pages with "Special Thanks..." comment on page 4; wizard TSR logo

4th Printing, 1981, contains 15 pantheons in 128 pages (back cover now says 15); face TSR logo - early versions retain the "Special Thanks..." comment, later versions do not; the cover background color on this Printing is shifted from purple toward blue

5th Printing, 1984 (on 1st page) & 1983 (back cover), retitled Legends & Lore - contents otherwise identical to 4th Printing

6th Printing, December 1987 - identified on copyright page

7th Printing, April 1988 - identified on copyright page

8th Printing, April 1990 - identified on copyright page

Exhaustive information can be found at:
https://www.acaeum.com/ddindexes/setpages/deities.html