[Washington, D.C.] : U.S. Department of the Interior, National Park Service,  Distributed: Washington, D.C. : Superintendent of Documents, U.S. Government Printing Office,  Manufactured: [Washington, D.C.] : U.S. Government Printing Office, 1968.
Scale 1:7,500,000 (W 94°36ʹ00ʺ--W 75°54ʹ00ʺ/N 40°32ʹ00ʺ--N 24°49ʹ00ʺ).
Title from cover panel. Includes text, location map, map of Puerto Rico and the Virgin Islands, and 2 enlargements. Descriptive index and colored illustrations on verso.
1 map : color ; 26 x 26 cm, on sheet 47 x 61 cm, folded to 24 x 11 cm