176 M. Baker—Surveys and Maps, District of Columbia. 
1891, Holtzman (R. 0.) Presented by R. O. Holtzman, real estate and 
insurance broker, Tenth and F streets N. W. Copyright, 1891. 
Size, 17x 19 inches. Seale, about 27 inches to one mile, or 1:22000, 
Crude photolithograph. 
No title. A real-estate advertising map. 
1891. Hopkins (G.M.) Map of the District of Columbia, from official 
records and actual surveys. Published by G. M. Hopkins, C. E., 520 
Walnut St., Philadelphia, Pa., 1891. Copyright, 1891. 
Size, 59 x 64inches. Secale, S00 feet to one inch, or 1:9600. 
Colored. 
1891. U.S. WarDepartment. U.S. Coastand Geodetic Survey. <A. D. 
Bache, sup’t. Map of the ground occupation and defense of the division 
of the U. 8. army in Virginia in command of Brig. Gen. Irvin McDowell, 
Topographical survey by the party in charge of H. L. Whiting, ass’t. 
U.S. C. 8S, Field-work executed during parts of June and July, 1861. 
By F. W. Dorr and C. Rockwell, U. 8. C. 8. Julius Bien & Co., lith., 
New York. 
Size, 16x17inches. Seale, 1:4'7500. 
Culture, black ; water, blue; contours, brown; timber, green. Contour interval, 
20 feet. 
[In Atlas to accompany the official records of the Union and Confederate armies, 
1861-1865. Published under the direction of the Hon. Redfield Proctor, Secretary 
of War, etc, fol., Washington, 1891, part 2, plate 6.] 
1891. U.S. War Department. Surveys for military defenses. Map 
of northeastern Virginia and vicinity of Washington, compiled in topo- 
graphical engineer’s office at division headquarters of General Irvin 
McDowell, Arlington, January 1, 1862. Corrected from recent surveys 
and reconnaissances under direction of the Bureau of Topographical 
Engineers, August 1, 1862. Drawn by J. J. Young and W. Hesselbach. 
Size, 17 x 27 inches. Secale, 2 miles to one inch, or 1:126720. 
Colored. Lithograph by Julius Bien & Co., New York. 
[Lm Atlas to accompany the official records of the Union and Confederate armies, 
1861-1865. Fol]., Washington, 1891, part 2, plate 7.] 
1892. Wan Hook (J.C.&C.G.) Map and guide to Washington, D. C. 
Compiled and published by J. C. and C. G. Van Hook, National Union 
building, 918 F St. N. W., Washington, D. C., 1892. 
Size, 18 x 25 inches. Seale, 3%4 inches to one mile, or 1:16900. 
Colored. Photolithograph by A. B. Graham, Washington, D. C. 
