John D. Whitford to Thomas Lincoln Casey, March 28, 1895 John Dortic to Thomas Lincoln Casey, December 10, 1856 John Dortic to Thomas Lincoln Casey, December 12, 1855 John Dortic to Thomas Lincoln Casey, December 21, 1855 John Dortic to Thomas Lincoln Casey, December 27, 1855 John Dortic to Thomas Lincoln Casey, December 8, 1855 John Dortic to Thomas Lincoln Casey, January 9, 1857 John Dortic to Thomas Lincoln Casey, June 30, 1856 John Dortic to Thomas Lincoln Casey, May 24, 1856 John Dortic to Thomas Lincoln Casey, November 17, 1856 John Dortic to Thomas Lincoln Casey, November 30, 1855 John Dortic to Thomas Lincoln Casey, October 13, 1856 John Dortic to Thomas Lincoln Casey, October 18, 1856 John Dortic to Thomas Lincoln Casey, October 23, 1855 John Dortic to Thomas Lincoln Casey, October 3, 1856 John Dortic to Thomas Lincoln Casey, September 22, 1856 John E. Watson to Thomas Lincoln Casey, November 28, 1881 John Edwards, Jr. to Thomas Lincoln Casey, January 8, 1881 John Elliott to Thomas Lincoln Casey, October 4, 1886 John F. McGlensey to Thomas Lincoln Casey, November 1, 1876 John F. Mount to Colonel John M. Wilson, July 18, 1889 John F. Paret and J. Loring Whittington to Thomas Lincoln Casey, November 1, 1881 John F. Weir to Emma Weir Casey, September 22, 1880 John F. Weir to Thomas Lincoln Casey and Emma Casey, June 9, 1881 John F. Weir to Thomas Lincoln Casey, April 18, 1889 John F. Weir to Thomas Lincoln Casey, December 23, 1886 John F. Weir to Thomas Lincoln Casey, December 6, 1878 John F. Weir to Thomas Lincoln Casey, February 25, 1882 John F. Weir to Thomas Lincoln Casey, January 13, 1872 John F. Weir to Thomas Lincoln Casey, November 11, 1880 John F. Weir to Thomas Lincoln Casey, November 2, 1886 John F. Weir to Thomas Lincoln Casey, November 21, 1878 John F. Weir to Thomas Lincoln Casey, November 5, 1886 John F. Weir to Thomas Lincoln Casey, October 10, 1881 John F. Weir to Thomas Lincoln Casey, October 12, 1881 John F. Weir to Thomas Lincoln Casey, October 15, 1881 John F. Weir to Thomas Lincoln Casey, September 10, 1880 John F. Weir to Thomas Lincoln Casey, September 11, 1880 John F. Weir to Thomas Lincoln Casey, September 25, 1880 John G. Ames/Department of the Interior to Thomas Lincoln Casey, January 2, 1895 John G. Carlisle to Daniel S. Lamont to Thomas Lincoln Casey, April 3, 1894, copy John G. D. Knight to Thomas Lincoln Casey, December 8, 1873 John G. Knight to Thomas Lincoln Casey, August 31, 1895 John G. Parker to Thomas Lincoln Casey, July 25, 1894 LeComt to Thomas Lincoln Casey, May 31, 1855 Lee to Thomas Lincoln Casey, August 9, 1886 Lee to Thomas Lincoln Casey, July 23, 1874 Letters &c Received from Augst. 15th 1881 to Sept. 23 1881 by Colonel [Thomas Lincoln] Casey U. S. Army Level on 500 foot course, September 18, 1884 Levels of Top of Columns at 240 + 250, undated