Directors of Photography:
Library and Archives Canada: 16mm.
"A brief history of the Rock of Gibraltar and the Mediterranean. Topics of note include: the story of Hercules; the Alameda Gardens; present-day Gibraltar's industry and economy; the Ottawa Tunnel; water as a commodity; British rule; monuments and memorials; Barbary Apes; and a piece of the Rock of Gibraltar that was sent to the Canadian National Exhibition. The Rock of Gibraltar is an advertising symbol used by the Prudential Insurance Company of America, one of the clients of the Foster Advertising Agency."
Crawley Films, Free Films: Directory of Sources of Free 16mm Sponsored Films in Canada (Ottawa: Crawley Films, May 1952): 12.
"Story of Rock of Gibraltar from early to present times."