Jacob Gesang founded a publishing house and bookstore in Shanghai in 1939. His businesses were forced closed when all stateless refugees, mostly Jewish, were moved into a ghetto in 1943. He and his wife remained in Shanghai until 1947.
Beginning in 1911, Gesang had been director of the bookstore and publishing house C. Boas Nachf. During Kristallnacht, his business was destroyed. The remaining books had to be sold to the Jüdischer Kulturbund.
- Fischer, Ernst. Verleger, Buchhändler und Antiquare aus Deutschland und Österreich in der Emigration nach 1933. Stuttgart: Verband Deutscher Antiquare, 2011.