Washington, D.C. : U.S Geological Survey
Atlas HA 1-; Ceased in 2004?; v. : ill., maps (some col.) ; 107 x 145 cm. or smaller, some folded, in envelopes 30 x 24 cm.
Predominant scale: 1:24,000; large regions at scale: 1:250,000./ Individual issues prepared in cooperation with various local agencies.
Merged with: Geologic investigations series, and: Miscellaneous fields studies, to form: Scientific investigations map.
Hydrologic Investigations atlas ; Hydrologic Investigations map