Includes rivers, mountain barriers, railroad routes and coal fields with key. Includes inset map of Aleutian Islands. Includes delineation of southern limit of winter ice. "Plate 1." "House Doc. 1346; 62d Cng., 3d Sess." Map of 19 x 27 cm....
Title from verso. Full caption from verso reads: "Roughnecks connect pipe string during delineation drilling at Prudhoe Bay in 1969. Extreme weather conditions in the Arctic mandate that the drill floor be enclosed and heated."