Hon. Heister Clymer to Thomas Lincoln Casey, July 2, 1879

Hon. O. D. Conger to Thomas Lincoln Casey, July 26, 1879

Hon. Robert C. Winthrop, Thomas Handasyd Perkins and the Monument to Washington, November 12, 1885

Hon. W. S. Shallenberger to Thomas Lincoln Casey, December 10, 1879

Hon. [Milton J.] Durham to Thomas Lincoln Casey, March 21, 1878

Hon. [Milton] J. Durham to Thomas Lincoln Casey, January 10, 1879

Hon. [Milton] J. Durham to Thomas Lincoln Casey, March 22, 1878, telegram copy

Hon. [Philip] Cook to Thomas Lincoln Casey, April 1, 1878

Horace Porter to Thomas Lincoln Casey, undated

Horatio King to Thomas Lincoln Casey, April 5, 1888

Horatio King to Thomas Lincoln Casey, December 1, 1891

Henry Hall to Thomas Lincoln Casey, June 30, 1890

Henry Hall to Thomas Lincoln Casey, March 28, 1890

Henry Hall to Thomas Lincoln Casey, May 15, 1890

Henry Hall to Thomas Lincoln Casey, November 13, 1888

Henry Hill to Chairman of Washington Monument Committee, Febraury 12, 1885

Henry Hodges to Thomas Lincoln Casey, December 29, 1890

Henry Hodges to Thomas Lincoln Casey, July 10, 1888

Henry J. Hunt to Thomas Lincoln Casey, October 27, 1890

Henry J. Hunt to [Thomas Lincoln Casey], January 12, 1890

Henry J. Hunt to [Thomas Lincoln Casey], January 19, 1890

Henry J. Spooner to Thomas Lincoln Casey, December 12, 1884

Henry L. Abbot to Thomas Lincoln Casey, April 24, 1890

Henry L. Abbot to Thomas Lincoln Casey, April 26, 1885

Henry L. Abbot to Thomas Lincoln Casey, August 20, 1887

Henry L. Abbot to Thomas Lincoln Casey, August 20, 1888

Henry L. Abbot to Thomas Lincoln Casey, August 24, 1888

Henry L. Abbot to Thomas Lincoln Casey, August 24, 1894

Henry L. Abbot to Thomas Lincoln Casey, August 31, 1887

Henry L. Abbot to Thomas Lincoln Casey, December 1, 1892

Henry L. Abbot to Thomas Lincoln Casey, December 15, 1888

Henry L. Abbot to Thomas Lincoln Casey, December 19, 1888

Henry L. Abbot to Thomas Lincoln Casey, December 23, 1889

Henry L. Abbot to Thomas Lincoln Casey, December 3, 1888

Henry L. Abbot to Thomas Lincoln Casey, December 3, 1892

Henry L. Abbot to Thomas Lincoln Casey, December 31, 1892

Henry L. Abbot to Thomas Lincoln Casey, February 11, 1869

Henry L. Abbot to Thomas Lincoln Casey, July 17, 1890

Henry L. Abbot to Thomas Lincoln Casey, July 19, 1889

Henry L. Abbot to Thomas Lincoln Casey, July 24, 1890

Henry L. Abbot to Thomas Lincoln Casey, July 25, 1890

Henry L. Abbot to Thomas Lincoln Casey, July 3, 1889

Henry L. Abbot to Thomas Lincoln Casey, June 8, 1885

Henry L. Abbot to Thomas Lincoln Casey, March 11, 1885

Henry L. Abbot to Thomas Lincoln Casey, March 12, 1869

Henry L. Abbot to Thomas Lincoln Casey, March 15, 1885

Henry L. Abbot to Thomas Lincoln Casey, March 23, 1885

Henry L. Abbot to Thomas Lincoln Casey, March 8, 1884

Henry L. Abbot to Thomas Lincoln Casey, May 24, 1885

Henry L. Abbot to Thomas Lincoln Casey, November 1, 1892