"Prepared in cooperation with the Maryland Geological Survey, the National Park Service, and the Loudoun County Department of Environmental Resources."
"Structure and stratigraphy of the Middle Proterozoic through Early Cambrian rocks of the complexly deformed Late Paleozoic Blue Ridge-South Mountain anticlinorium."
"U.S. Department of the Interior, U.S. Geological Survey"--T.p. verso.
Shipping list no.: 97-0299-P.
One folded leaf of plate in pocket.