Caterpillar diesel D8 tractor with LeTourneau bulldozer pushing sand from bay inlet, Alaska

View of Caterpillar diesel D8 tractors with LeTourneau bulldozers pushing sand from bay inlet bottom in Alaska during World War II. Label on back: "Caterpillar Tractor Co., Peoria, Il. Rec'd from War Department, Army Pictorial Service, O.C. Sig. O. Their letter, 5-3-43. Date taken, 1942. Model, D8. Description of work, two 'Caterpillar' diesel D8 tractors with LeTourneau bulldozers pushing sand from bay inlet bottom to be picked up by scrapers and hauled to airfield where it is used to fill in soft sports. Somewhere in Alaska. Official Signal Corp photo." Handwritten on back: "Bulldozers."