Known for : Production
He co-founded and was the first director of The March of Time, which added topical issues to newsreels. He also produced feature film documentaries that based dramatic narrative on factual records, including "The House On 92nd Street" (1945), which used real FBI files, "Boomerang!" (1946), it included a reenactment of an actual murder case and a biography, "Martin Luther" (1953).