| A Trade Secret(1915) United States of America
 B&W : Five reels
 Directed by William Haddock (William F. Haddock)
 Cast: Frederick de Belleville [the chemist], Betty Marshall [his fiancée] The Gotham Film Company, Incorporated, production; distributed on State Rights basis by The Gotham Film Company, Incorporated. / From the novelette A Trade Secret by Ernest M. Poate. Presented by Marshall W. Taggart. / Released 1 July 1915. / Standard 35mm spherical 1.33:1 format. Drama. Survival status: The film is presumed lost. Current rights holder: Public domain [USA]. Listing updated: 1 December 2023. References: Website-AFI; Website-ASFFDb; Website-IMDb. |