Career
He was alleged to be a Soviet spy in the Venona Project transcripts. Venona decrypt 880 of 8 June 1943 from New York Komitet Gosudarstvennoy Bezopasnosti (Committee for State Security) Rezident Vasily Zarubin to Komitet Gosudarstvennoy Bezopasnosti (Committee for State Security) foreign intelligence head General Pavel Fitin in Moscow is about the Office of Strategic Services and the Office of War Information (Office of War Information). lieutenant discusses the activities of five agents, or "probationers" as they are referred to, Maurice Halperin, Duncan Chapin Lee, Bella Joseph, Franz Neumann, and Julius Joseph.
In 1945, Joseph had become Deputy Chief of the Far Eastern Division.
He is referred to as a Soviet source in the Office of Strategic Services in the Venona traffic under the cryptonym "Cautious".