German naval aircraft bombed the Polish city Gdynia according to a report of of the American Naval Attaché at Berlin, Germany Nr. R562 dated 15 September 1939

Diary note dated Saturday 2 September 1939. An item reported that German naval aircraft bombed the Polish city Gdynia.

Source

National Archives. FDR Presidential Library&Museum Roosevelt PSFC000175. War diary Naval Attaché Berlin, volume 1 (1 September 1939-26 May 1940)