172 M. Baker—Surveys and Maps, District of Columbia. 
1862. McDowell (General Irvin). Surveys for military defenses. Map 
of N. eastern Virginia and vicinity of Washington, compiled in topo- 
eraphical engineer's office, at division headquarters of General Irvin 
MeDowell, Arlington, January 1, 1852, from published and manuseript 
maps corrected by recent surveys and reconnaissances. Engraved on 
stone by J. Schedler, No. 120 Pearl St., N. Y. 
Size, 50 x 67 inches. Seale, one inch to the mile, or 1:63360. 
lack. Lithograph. 
1862. Colton (G. Woolworth). Topographical map of the original Dis- 
trict of Columbia and environs: showing the fortifications around the 
city of Washington. By E. G. Arnold, C. E. Published by G. Wool- 
worth Colton, 18 Beekman St., New York, 1862. Copyright by Arnold, 
1862. 
Size, 32 x 33 inches. Seale, 2 inches to one mile, or 1:3L680. 
Colored. Lithograph. 
Topography shown by hachures. Mainly copied from Boschke’s map. One of 
the maps issued by Colton was seized by order of Secretary Stanton, and this is 
probabiy the one. Copies seen, L. C. 
1867. Carpenter (B. D.) Map of the roads in Washington county, 
D. C., 1867. B. D. Carpenter, surveyor of Washington county, D. C. 
Size, 34x 40 inches. Seale, 4 inches to one mile, or 1:15840. 
Black, with certain roads colored. Lithograph by J. F. Gedney, 393 Pennsyl- 
vania Ave., Washington. Copies seen, G.S. 
1868. Wyeth (S. D.) Map of the city of Washington, District of 
Columbia. 
Size,6x 744inches. Seale, none. 
Purple. 
[In Wyeth (S.D.) The Federal city, ete. 3d ed., 8°, Washington, D. C., Gibson 
Brothers, 1868, pp. 34, 55.] 
Very crude and poor. Copies seen, L. C. 
1868. Johnson (A. J.) Johnson’s Washington and Georgetown, pub- 
lished by A. J. Johnson, New York. Copyright 1868. 
Size, 13 x 17 inches. Seale, 2 9-16 inches to one mile, or 1:24700. 
Colored. 
[in Johnson’s new illustrated family atlas of the world, ete, fol. New York, 
A. J. Johnson & Co., 1885, map 48.] 
1870. Forsyth (William). Plan of the city of Washington, in the Dis- 
trict of Columbia, established as the permanent seat of government of 
the United States, extended to embrace its suburban towns, villages, 
&c, and the city of Georgetown, and showing original and other valu- 
able data not to be found on any maps heretofore published. Also a 
diagram of the avenues, showing their true courses and distances, and 
a plan of Alexandria. By William Forsyth, formerly surveyor of 
Washington city. 1870. Copyright 1870. 
Size, 60 x 68 inches, in six sheets. Scale, 500 feet to one inch, or 1:6000. 
Colored, glazed, on rollers. Photolith. by the N. Y. Lithographing, Engraving & 
Printing Co,; Julius Bien, sup’t. 
There are said to be two editions of this map Copies seen, city surveyor’s 
office and L, C, 
