Note: Letters from T. L. Casey Note: Letters from Thomas Lincoln Casey to his Father Note: Letters received from Thomas L. Casey while Notes on interior shape from Swing of Monument, undated Notes on Monument Crane, undated Notes on Project for a Marble Pyramidion for the Washington Monument, April 4, 1884 Notes, sketch of cracks in foundation of the Washington Monument, undated Notification of failure to pay a loan, April 1, 1895 NY Athletic Club to Thomas Lincoln Casey, January 16, 1888 NY Genealogical and Biographical Society to Thomas Lincoln Casey, May 25, 1889 O. Ferriss to Thomas Lincoln Casey, July 12, 1882 O. H. Ernst to Thomas Lincoln Casey, August 8, 1890, copy O. H. Ernst to Thomas Lincoln Casey, February 11, 1891 O. H. Ernst to Thomas Lincoln Casey, June 29, 1892 O. L. Pruden to Thomas Lincoln Casey, June 10, 1892 O. L. Pruden to Thomas Lincoln Casey, May 8, 1895 O. L. Pruden to Thomas Lincoln Casey, November 2, 1895 O. M. Carter to Thomas Lincoln Casey, April 1, 1889 O. M. Carter to Thomas Lincoln Casey, June 2, 1889 O. M. Carter to Thomas Lincoln Casey, June 8, 1889 O. M. Carter to Thomas Lincoln Casey, June 9, 1889 Obelisk - calculations for weight, etc., undated Office of Building for State War and Navy Departments - Washington Monument Payment Refunds, November 7, 1887 Office of the Light House Board to Thomas Lincoln Casey, February 28, 1888 Office of the Light-House Board to Thomas Lincoln Casey, April 13, 1888 Office of the Light-House Board to Thomas Lincoln Casey, April 19, 1889 Office of the Light-House Board to Thomas Lincoln Casey, April 28, 1888 Office of the Light-House Board to Thomas Lincoln Casey, February 10, 1888 Office of the Light-house Board to Thomas Lincoln Casey, February 20, 1889 Office of the Light-House Board to Thomas Lincoln Casey, January 10, 1889 Office of the Light-House Board to Thomas Lincoln Casey, January 26, 1888 Office of the Light-House Board to Thomas Lincoln Casey, January 3, 1888 Office of the Light-House Board to Thomas Lincoln Casey, January 30, 1889 Office of the Light-House Board to Thomas Lincoln Casey, June 5, 1888 Office of the Light-house Board to Thomas Lincoln Casey, March 1, 1889 Office of the Light-house Board to Thomas Lincoln Casey, March 15, 1889 Office of the Light-House Board to Thomas Lincoln Casey, March 17, 1888 Office of the Light-House Board to Thomas Lincoln Casey, March 31, 1888 Office of the Light-House Board to Thomas Lincoln Casey, May 10, 1888 Office of the Light-House Board to Thomas Lincoln Casey, May 29, 1888 Office of the National Wire Mattress Co. to Thomas Lincoln Casey, July 16, 1895 Office of the Public Printer to Thomas Lincoln Casey, July 2, 1895 Office of the Public Printer to Thomas Lincoln Casey, July 3, 1895 Officers of a European Squadron, undated Olcott & Olcott to Thomas Lincoln Casey, March 4, 1892 Olcott & Olcott to Thomas Lincoln Casey, March 8, 1892 On file in the War Department, undated Orlando M. McPherson to Thomas Lincoln Casey, March 31, 1895 Orlando M. Poe to Thomas Lincoln Casey, June 26, 1892 Major John M. Wilson to Thomas Lincoln Casey, March 14, 1871