Birds of Prey of the Northeast: Field Guide
Birds of Maryland, Delaware, and the District of Columbia
Beehler, Bruce M., photography by Middleton Evans
Atlas of the Breeding Birds of Maryland and the District of Columbia
Robbins, Chandler S.
Birds of Maryland and the District of Columbia
Stewart, Robert E. and Chandler S. Robbins
Waterfowl of the Chesapeake Bay Country
Observations of Marine Birds and Mammals in the Northern Chesapeake Bight
Rowlett, Richard A.
Field Guide to the Natural World of Washington, D.C.
Mammals of the Carolinas, Virginia, and Maryland
Webster, William David ; James F. Parnell & Walter C. Biggs, Jr.
Checklist of Birds of the Mid-Atlantic Area
STOTT, William R. Jr.; Fleming, Gregory W.