Stratigraphic notes, 1992; Four short papers propose changes in stratigraphic nomenclature in Vermont, Virginia, Maryland, and the District of Columbia

Transport of dissolved and suspended material by the Potomac River at Chain Bridge, at Washington, D.C., water years 1978-81

Evaluation of the Stream-Gaging Network in Maryland, Delaware and Washington, D.C.

Census tracts, 1970, Washington urban area, District of Columbia, Maryland, and Virginia

WASHINGTON, DC

UPPER MARLBORO, MD

Geology of the Chesapeake and Ohio Canal National Historical Park and Potomac River Corridor, District of Columbia, Maryland, West Virginia, and Virginia cd-rom-disk 1; Geologic map and GIS files cd-rom-disk 2; Geologic report and figures

Digital Geologic Map and Database of the Chesapeake and Ohio Canal National Historical Park and Potomac River Corridor, District of Columbia, Virginia, Maryland, and West Virginia 1 oversized sheet; size 45 x 45; additional data set and content avail online

ALEXANDRIA, VA-DC-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1965

ALEXANDRIA, VA-DC-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1965

ALEXANDRIA, VA-DC-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 31680-SCALE 1945

WASHINGTON EAST, DC-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1956

WASHINGTON EAST, DC-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1951

UPPER MARLBORO, MD-DC HISTORICAL MAP GEOPDF 15X15 GRID 48000-SCALE 1934

WASHINGTON, DC-MD-VA HISTORICAL MAP GEOPDF 1X2 GRID 250000-SCALE 1957