Gods, Demi-Gods & Heroes (Supplement IV), softback supplement for Original D&D, 2nd printing, by Kuntz & Ward
Before there was Deities & Demigods, there was this. Much the same format as the later AD&D tome, but with less detail. Also has pretty much the same pantheons from memory, although there’s no Arthurian stuff here or Cthulhu. Elric appears though.
In the SPECIAL condition copy, a previous owner has added his own mythology in pencil at the back on one of the ‘Notes’ pages (see photo). There is also some age-spotting, especially on both sides of the back cover. Other than that, the condition is pretty GOOD.
The VERY GOOD condition copy doesn’t have this “extra pantheon”!