Geological Survey (U.S.)Super XX; By USGS (BAR 109-117,118); Scale 1:19,30069 40' N 156 40' WJPEGoai:digital.library.illinois.edu:ec0cf650-8a10-0137-6d99-02d0d7bfd6e4-d142engPublicStereogram No. 142 - PolygonImageryAlaska--North Slope BoroughAlaska1948-09-06University of Illinois Urbana-Champaign