Best Kept Secrets. Sterling, Va.: Sterling Publishing Company, 2007. Baldacci, David. The Camel Club. New York: Warner Books, 2005. Berg, Scott W. Grand Avenues: The Story of Pierre Charles L'Enfant, the French Visionary Who Designed Washington, D.C. New York: Vintage Books, 2007. Clarke, Breena. River, Cross My Heart. Waterville, Me.: Thorndike Press, 2000. Cultural Landscape Program. Cultural Landscape Report: Dumbarton Oaks Park, Rock Creek Park. National Capital Region. National Park Service. Washington, D.C.: U.S. Department of the Interior, 2000. D'Angelis, Gina. It Happened in Washington, D.C. Guilford, Conn.: TwoDot Press, 2004. Davis, Timothy. "Mount Vernon Memorial Highway: Changing Conceptions of an American Commemorative Landscape." In Places of Commemoration: Search for Identity and Landscape Design. Joachim Wolschke-Bulmahn, ed. Washington, D.C.: Dumbarton Oaks Research Library and Collection, 2001. DiMento, Joseph F. and Ellis, Cliff. Changing Lanes: Visions and Histories of Urban Freeways. Cambridge, Mass.: MIT Press, 2013. Evelyn, Douglas E.; Dickson, Paul; and Ackerman, S.J. On This Spot: Pinpointing the Past in Washington, D.C. Sterling, Va.: Capital Books, 2008. Flynn, Kevin C. and Mason, William T. The Freshwater Potomac: Aquatic Communities and Environmental Stresses. Rockville, Md.: Interstate Commission on the Potomac River Basin, 1978. Herron, Carolivia. Thereafter, Johnnie. New York: Vintage Books, 1992. Jones, L. Rodwell. "Historical Geography." In North America. London: Methuen, 1957. Mason, William Thomas. Potomac River Basin Baseline Water Quality Monitoring Network. Water Quality Monitoring Task Group. Interstate Commission on the Potomac River Basin. Bethesda, Md.: Interstate Commission on the Potomac River Basin, 1974. McAtee, Waldo Lee. A Sketch of the Natural History of the District of Columbia Together With an Indexed Edition of the U.S. Geological Survey's 1917 Map of Washington and Vicinity. Washington, D.C.: Press of H.L. & J.B. McQueen, 1918. Myer, Donald Beekman. Bridges and the City of Washington. Washington, D.C.: U.S. Commission of Fine Arts, 1983. Office of Conservation, Interpretation, and Use. Scientific Report No. 4. National Capital Region. National Park Service. Washington, D.C.: U.S. Department of the Interior, 1965. Potomac Planning Task Force. The Potomac: A Report on Its Imperiled Future and a Guide for Its Orderly Development. Washington, D.C.: U.S. Government Printing Office, 1967. Porterfield, Kitty. "Late to the Line: Starting Sport Competition as an Adult." In Inside Sports. Jay Coakley and Peter Donnelly, eds. New York: Routledge, 1999. Schrag, Zachary M. The Great Society Subway: A History of the Washington Metro. Baltimore, Md.: Johns Hopkins University Press, 2006. Skinner, Charles M. Myths