The Denis Lomax collection consists of photographs, photograph negatives, scrapbooks, printed materials, correspondence and writings that document the lives of filmmakers Leila Roosevelt and Armand Denis as well as their families. The collection contains materials related to Leila Roosevelt's parents, filmmaker, entrepreneur and sportsman Cornelius Louis André Roosevelt (Andre Roosevelt), as well as architect and artist Adelheid Lange Roosevelt. The collection highlights Leila Roosevelt and Armand Denis's travels and film productions such as the documentary film based on the Democratic Republic of the Congo entitled Dark Rapture (Magie Africaine) (1938) and a film based in Bali, Indonesia entitled Goona Goona (Love Powder) (1932). Materials documenting the Anthropoid Ape Research foundation in Dania Beach, Florida, founded by Leila Roosevelt and Armand Denis, along with personal papers of their families are also included in this collection.