The Swordsman of Mars Ace cover
From Author Wars - https://authorwars.com/books/the-swordsman-of-mars-ace-cover-1691074.html
Editions/Publications:
- Unknown. OAK Leaves, V1n9 Fall 1972 (Unknown, Emsh, Modern Limited Publications, $0.25, 28 pages, octavo, FANZINE)
- Unknown. The Compleat OAK Leaves: Volume One of the Official Journal of Otis Adelbert Kline and His Works (Unknown, Emsh, Fictioneer Books, ISBN-10: 0934882045, $10.00, 192 pages, Trade Paperback, Collection)