Länk
American deliveries to the Soviet Union can be divided into the following phases:
"Pre Lend-lease" June 22, 1941, to September 30, 1941 (paid for in gold and other minerals)
First protocol period from October 1, 1941, to June 30, 1942 (signed October 7, 1941),[52] these supplies were to be manufactured and delivered by the UK with US credit financing.
Second protocol period from July 1, 1942, to June 30, 1943 (signed October 6, 1942)
Third protocol period from July 1, 1943, to June 30, 1944 (signed October 19, 1943)
Fourth protocol period from July 1, 1944 (signed April 17, 1945), formally ended May 12, 1945, but deliveries continued for the duration of the war with Japan (which the Soviet Union entered on August 8, 1945) under the "Milepost" agreement until September 2, 1945, when Japan capitulated. On September 20, 1945, all Lend-Lease to the Soviet Union was terminated.