From the Close-up:USA series.
Albers Conical Equal-Area projection. Standard parallels 29⁰ 30' and 45⁰ 30'.
Supplement to National Geographic, March 1973, p. 287A, Vol. 143, no. 3.
On verso: Timber, cattle, and the mist from the sea. Inset of Yellowstone and Grand Teton National Parks, and Puget Sound.