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

Historic Bluff Retreat and Stabilization at Flag Harbor, Chesapeake Beach, Maryland 1 oversized sheet; additional data set and content avail online

Slope Evolution at the Calvert Cliffs, Maryland; Measuring the Change from Eroding Bluffs to Stable Slopes 1 oversized sheet; 68 x 35

Joint Patterns in Sandstone and Quartzose Siltstone in the Appalachian Basin 2 oversized sheets

Estimates of the Loads of Nitrite + Nitrite in the Flow of Bassett Creek to the Maryland Coastal Bays Adjacent to Assateague Island National Seashore, Water Years 2003-2004

FORT BELVOIR, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1956

VIENNA, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1966

FORT BELVOIR, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1965

HEATHSVILLE, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1968

LEESBURG, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1968

RICHMOND, VA-MD HISTORICAL MAP GEOPDF 1X2 GRID 250000-SCALE 1964

LEESBURG, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1952

LEESBURG, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1968

FORT BELVOIR, VA-MD HISTORICAL MAP GEOPDF 7.5X7.5 GRID 24000-SCALE 1965