The program's plots progressed through three phases. During World War II they involved "threats from the Axis powers."[5] After the war ended, Cold War threats took precedence. In the third phase, "they addressed all manner of illegal activities.[5]
Scriptwriters for the series included Milton J. Kramer, Emile C. Tepperman and Stanley Niss.[1]
An unsuccessful pilot for a television version of Counterspy was produced in England in 1958, with Don Megowan as David Harding.[3] The trade publication Broadcasting also reported on plans of Bernard L. Schubert Inc. to produce 39 episodes of David Harding, Counterspy with Reed Hadley in the title role[6] and Telestar Films' releasing of Counterspy for syndication.[7]
A Spanish version of Counterspy was transmitted to South America via shortwave radio in 1942. An article in Broadcasting reported that commercial were deleted and that the effort was "in cooperation with the Office of the Coordinator of Inter-American Affairs."[8]
^ abDunning, John. (1998). On the Air: The Encyclopedia of Old-Time Radio. Oxford University Press. ISBN978-0-19-507678-3. p. 181.
^Reinehr, Robert C. and Swartz, Jon D. (2008). The A to Z of Old-Time Radio. Scarecrow Press, Inc. ISBN978-0-8108-7616-3. pp. 69–70.
^ abErickson, Hal (2014). From radio to the big screen: Hollywood films featuring broadcast personalities and programs. McFarland & Company, Inc. ISBN978-0-7864-7757-9. pp. 253–255.
^Buxton, Frank and Owen, Bill (1972). The Big Broadcast: 1920–1950. The Viking Press. SBN 670-16240-x. p. 62.
^ abcBlottner, Gene (2012). Columbia Pictures Movie Series, 1926–1955: The Harry Cohn Years. McFarland & Company, Inc. ISBN978-0-7864-3353-7. pp. 80–83.
^"Program Notes"(PDF). Broadcasting. September 7, 1959. Retrieved 13 August 2014.
