Scale ca. 1:2,500,000;1 in. equals approx 40 miles.
"Albers equal-area projection based on standard parallels 29 1/2⁰ and 45 1/2⁰."
Shows county boundaries.
Insets: Guam, 1:1,000,000.--American Samoa, 1:1,000,000.--Hawaii (principal islands).--Alaska, 1:7,500,000.--Outlying islands of the United States in the Pacific.--Canal Zone.--Puerto Rico and Virgin Islands.--Outlying areas of the United States in the Caribbean.