Including a summary of reports of ships which reached Archangel, 1942; an extract from the "Mercantile Signal Instructions" (Mersigs) issued by the Admiralty, undated; an extract from Admiralty convoy instructions to escorts, 1944; letters from Jackie Broome, 1966 (2); a supplement to the "London Gazette", 17 October 1950; and a German article on Convoy PQ 17, undated.