Title from image. Verso reads: "P.5 -OIL. 2 col x 25 1/2 PICAS. "Chena Sign --" Cutline. 100. 26." Verso also stamped with the U.S. Army Corps of Engineers logo and the dates Sept. 1974 and Jan 16, 1975. Image shows a sign posted in...
Title from verso. "Seismic exploration 'cat' train, in the foreground, was at work on Alaska's North slope in 1969 while exploratory drilling continued nearby. (Atlantic Richfield photo)."
From slide index prepared by Peter Haase 14 July 2006: International Boundary monument and cutline in forest to mark the Alaska and Canada national boundary.