German submarines again active along the northern Atlantic convoy routes according to the U.S. Joint Intelligence Committee. Daily summary dated 24 February 1942

An item reported that according to the J.I.C. after more than a month nearly inactivity several German submarines reappeared along the northern Atlantic convoy routes.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. MR0423. U.S. Joint Intelligence Committee. Daily summary No. 76 dated 24 February 1942