ALSIB (or the Northern Trace) was the Soviet Union portion of the Alaska-Siberian air road receiving Lend-Lease aircraft from the Northwest Staging Route.
Aircraft manufactured in the United States were flown over this route for World War II combat service on the Eastern Front.
[1] Download coordinates as: United States ferry pilots delivered aircraft to Ladd Army Airfield in Fairbanks, Alaska.
Bombers and Douglas C-47 Skytrains might fly independently, and C-47s transported ferry pilots east for new aircraft.
[1] Soviet First regiment pilots accepted the planes at Fairbanks and flew over the Bering Strait via St. Lawrence Island.