[Sharpsburg, Md. (P.O. Box 4, Sharpsburg 21782)] : [U.S. Dept. of the Interior, National Park Service, National Capital Region, C&O Canal National Historical Park], [1993]?
[Bethesda, Md.] : Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health, National Heart, Lung, and Blood Institute, 1979