Dr. John D. Clark
Source: "Dr. John D. Clark Bibliography." Author Wars, https://authorwars.com/authors/dr-john-d-clark.html".
Titles:
Essays
- Unknown. An Informal Biography of Conan the Cimmerian
- Unknown. Introduction (The Petrified Planet)
- Unknown. Letter (Amazing Stories, January 1939): The Rocket Ship
- Unknown. Letter (Analog, February 1964)
- Unknown. Letter (Analog, June 1963)
- Unknown. Letter (Analog, November 1960)
- Unknown. Letter (Astounding Stories, February 1937): About Atlantis.
- 2007. Introduction (Uller Uprising)