118 Bulletin 1, Biological Society of Washington, 1918. 



1896. 

 Roberts' Road Map of the District of Columbia and adjoining por- 

 tions of Maryland and Virginia, 1896, W. F. Roberts. 



This is Ward's 1882 Map with a few additions, and the roads 

 marked to indicate their quality. 



1897. 

 Mt. Vernon Sheet. Virginia-Maryland, Reconnoissance Map. 

 [Topographic Atlas of the United States.] U. S. Geol. Survey, 1897. 

 Reprinted 1898. 



1901. 

 Washington Folio. District of Columbia, Maryland-Virginia. 

 Geologic Atlas of the United States. Folio 70, Library Edition. 

 U. S. Geol. Survey, 1901. 4 pp., 5 maps. 

 Contains 1 Topographic, 1 Physiographic and 3 Geologic maps. 



1903. 

 Map of Prince Georges County and District of Columbia showing 

 the Topography and Election Districts. Maryland Geological Survey, 

 1903. 



1906. 

 Map of Rock Creek Park showing Roads and Bridle Paths. Nov., 

 1906. Compiled under the direction of the Rock Creek Park Board 

 of Control, John Biddle, Major, Corps of Eng'rs., U. S. A., Secretary. 



1907. 

 Patuxent Folio. Maryland-District of Columbia. Geologic Atlas 

 of the United States. Folio 152, U. S. Geol. Survey, 1907. 12 pp., 

 3 maps. 



1909. 

 New Index Map of Washington, D. C. Compiled from Official 

 Surveys, Private Plans and best authorities. 1909 (?). Brentano's. 

 Contains a good street index. 



1910. 

 Map of Fairfax County, Virginia, compiled by Columbus D. Choate, 

 1910. 



1910. 

 Map of Montgomery County and District of Columbia showing 

 the topography and Election Districts. Maryland Geological Survey, 

 1910. 



1915. 

 Rural Delivery Routes. Fairfax County, Va. Postoffice Depart- 

 ment, 1915. 



1915. 

 Potomac River, Great Falls to Little Falls, and adjoining parts of 

 Maryland and Virginia. W. L. McAfee in McAfee, W. L., and Weed, 

 A. C. First List of the fishes of the vicinity of Plummer's Island, 



