Dr. Fritz Gustav Wentzel, 1877-1963, was an amateur photographer, photo historian, and photo chemist who developed the silver bromide photographic paper marketed by Agfa as Brovira. The Wentzel family, including sons Volkmar Kurt Wentzel, Wilfred Wentzel, and Friedrich Wolfgang Wentzel, moved from Dresden to the United States in 1926 when Dr. Wentzel became the director at the Agfa-Ansco photographic paper manufacturing plant in Binghamton, New York. Their youngest son, Volkmar Kurt, was a National Geographic photographer from 1939 into the 1970s. Fritz Wentzel papers regarding early photographic papers are in the collection of Eastman Museum, Rochester NY.