W. W. Gelatt to Thomas Lincoln Casey, undated [1879] W. W. Gellatt to Thomas Lincoln Casey, November 9, 1877 W. W. Gellatt to Thomas Lincoln Casey, October 31, 1877 W. Whitelock to Thomas Lincoln Casey, May 1, 1885 W. Whitelock to Thomas Lincoln Casey, May 18, 1885 W. Whitelock to Thomas Lincoln Casey, May 5, 1885 W. Whitelock to Thomas Lincoln Casey, May 9, 1885 W. Winthorpe to Thomas Lincoln Casey, undated [1877] W. Winthrop to Thomas Lincoln Casey, August 2, 1869 W. Young to Thomas Lincoln Casey, March 27, 1890 Wade Hampton to Thomas Lincoln Casey, September 11, 1888 Walter D. Weir to Thomas Lincoln Casey, August 3, 1869 Walter D. Weir to Thomas Lincoln Casey, December 11, 1869 Walter D. Weir to Thomas Lincoln Casey, July 15, 1869 Walter L. Fisk to Thomas Lincoln Casey, November 10, 1891 Walter L. Fisk to Thomas Lincoln Casey, October 15, 1891 Walter McFarland to Thomas Lincoln Casey, February 17, 1887 Walter McFarland to Thomas Lincoln Casey, July 9, 1888 Walter McFarland to Thomas Lincoln Casey, March 21, 1887 Walter McFarland to Thomas Lincoln Casey, May 14, 1887 Walter S. Franklin to Thomas Lincoln Casey, July 16, 1888 Walter West to Thomas Lincoln Casey, June 7, 1869 War Department Library to Thomas Lincoln Casey, May 13, 1891 War Department to Bernard R. Green, undated [August 1885] War Department to Thomas Lincoln Casey, September 12, 1885 War Department to [Thomas Lincoln Casey], April 14, 1888 Warren Ackerman to [Frederick] T. Frelinghuysen, May 19, 1884 Warren Ackerman to [Frederick] T. Frelinghuysen, May 19, 1884, copy Washington Aqueduct Tables, July 1881 Washington Aqueduct, Flow of Water for different levels, undated Washington Aqueduct: Discharge of Conduit between the two reservoirs..., March 3, 1882 Washington Aqueduct: Flow of Water in Conduit from Gt Falls to the Distributing Reservoir, February 25, 1882 Washington Aqueduct: Flow of Water in Conduit, undated Washington Aqueduct: Formula for calculating the flow of waterÂ…, May 26, 1881 Washington Gas Light Co. to Thomas Lincoln Casey, October 16, 1884 Washington Market Company vs. The Comissioners, January 1879 Washington Mont, undated [July 18, 1890] Washington Monument - Drawing of Monument, 1844 Washington Monument Levels, August 7, 1891 Washington's Birthplace, Estimate for Wooden Pile Wharf, undated [1882-1884] Water taken from the distributing reservoir, June 27 and June 28, 1881 Watkins & Lewis, December 1890 Webb C. Hayes to Thomas Lincoln Casey, April 1, 1878, telegram Webb C. Hayes to Thomas Lincoln Casey, August 5, 1877 Weight certificate, Washington Monument Drum, July 22, 1850 Weight certificate, Washington Monument Shaft, July 22, 1850 Weight of Iron Columns in Monument, undated West End Hotel, undated [1885] Western Presbyterian Church to Thomas Lincoln Casey, April 13, 1879 [Bernard] R. Green to Thomas Lincoln Casey, August 31, 1889