RKO Forty Acres (English Wikipedia)

Bingen, Steven (2019). Hollywood's Lost Backlot: 40 Acres of Glamour and Mystery. Guilford, Connecticut: Lyons Publishing. p. xi. ISBN 9781493033621. Retrieved 10 January 2022.
Michael G. Fitzgerald, Boyd Magers (1989). Ladies of the Western, pg 9. McFarland. ISBN 0-7864-1140-6. Google Book Search

burroughsbibliophiles.com

Musso, Joseph (1993). Forty Acres: A History of RKO Backlot Films (article). Burroughs Bulletin #14. Burroughs Bulletin

"Robertson, Ed (©1996, 2006)". Television Chronicles: Interview with Robert Stack. Archived from the original on May 18, 2006. Retrieved 2008-03-07.

G, O. A. (2011). "Erickson, Hal - Allmovie (2008)". Movies & TV Dept. The New York Times. Archived from the original on 2011-05-20. Retrieved 2008-04-11.

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"The Culver Studios (©2006)". About Us - Studio History. Archived from the original on 2008-03-25. Retrieved 2008-03-07.
"CBS Studios Inc". Star Trek: The Original Series - The Complete First Season (1966). Archived from the original on 2008-04-20. Retrieved 2008-03-07.
G, O. A. (2011). "Erickson, Hal - Allmovie (2008)". Movies & TV Dept. The New York Times. Archived from the original on 2011-05-20. Retrieved 2008-04-11.
"The 1966 Batman TV Tribute Site". 40 Acres Backlot. Archived from the original on 2008-02-23. Retrieved 2008-03-25.
"Robertson, Ed (©1996, 2006)". Television Chronicles: Interview with Robert Stack. Archived from the original on May 18, 2006. Retrieved 2008-03-07.