Screen Writers' Guild; Rouben Mamoulian Collection (Library of Congress) DLC (1947). The Screen Writer (Jun 1947 – Mar 1948). MBRS Library of Congress. Screen Writers Guild.
doi.org
"Nicholls, David Alan, (born 30 Nov. 1966), novelist, screenwriter", Who's Who, Oxford University Press, December 1, 2012, doi:10.1093/ww/9780199540884.013.u256595
newspapers.com
"The Drama Desk". The Pittsburgh Post-Gazette. June 30, 1944. Retrieved December 1, 2019.
"Film Pioneer Dies". The Pittsburgh Press. July 7, 1944. Retrieved December 1, 2019.