Calculations and estimates: Per centrum of Cost of Contingent Services in North Wing, February 2, 1881 Calculations and estimates: Position & Course, undated Calculations and Estimates: Quantities and Values of Bodwell Co. Granite and Cutting in West and Centre Wings, January 18, 1884 Calculations and Estimates: Quantities and Values of Granite Stock and Cutting in North Wing, undated Calculations and Estimates: S. [Samuel] F. Phillips to Alex. Ramsey, December 19, 1879 Calculations and Estimates: South Wing, undated Calculations and estimates: Stock & Cutting in S W & N Building, undated Calculations and Estimates: Stone Cutting [Memorandum], undated Calculations and estimates: Stone papers, 1882 Calculations and Estimates: Thomas Lincoln Casey to Robert T. Lincoln, April, 7, 1883 Calculations and estimates: West Wing, undated Calculations and estimates: When we took charge March 3, 1877, undated Calculations and estimates: When we took charge of Building March 3, 1877 , undated Calculations and Estimates: [Envelope], undated Calculations and estimates: [Memorandum] concerning fire places Navy Building, undated Calculations and estimates: [Memorandum] Cost of Plastering 3d Coat North, undated Calculations and estimates: [Memorandum] Estimate for Water Main, undated Calculations and estimates: [Memorandum] Estimate of Cost of heating apparatus Navy Building, undated Calculations and estimates: [Memorandum] Estimate of Cost of Stones Stairs of War Building, undated Calculations and estimates: [Memorandum] of Parties to furnish bricks, undated Calculations [of water levels and amounts at Great Falls (GF) and Distributing Reservoir (DR)?], undated Calculations, etc, of Prices of Stonecutting, 1877 Calhoun Latham to Thomas Lincoln Casey, December 27, 1888 Camelia C. J. Dyer to Thomas Lincoln Casey, January 15, 1884 Capt. Charles Carr to Thomas Lincoln Casey, January 24, 1891 Capt. Crowninshield to Thomas Lincoln Casey, August 6, 1885 Ed. Sutherland to Thomas Lincoln Casey, July 5, 1887 Ed. Sutherland to Thomas Lincoln Casey, July 7, 1887 Ed. Sutherland to Thomas Lincoln Casey, June 11, 1888 Ed. Sutherland to Thomas Lincoln Casey, June 15, 1887 Ed. Sutherland to Thomas Lincoln Casey, June 16, 1887 Ed. Sutherland to Thomas Lincoln Casey, June 2, 1888 Ed. Sutherland to Thomas Lincoln Casey, June 22, 1888 Ed. Sutherland to Thomas Lincoln Casey, June 7, 1888 Ed. Sutherland to Thomas Lincoln Casey, March 2, 1888 Ed. Sutherland to Thomas Lincoln Casey, March 9, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 10, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 11, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 12, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 14, 1887 Ed. Sutherland to Thomas Lincoln Casey, May 14, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 17, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 18, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 19, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 21, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 22, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 23, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 24, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 25, 1888 Ed. Sutherland to Thomas Lincoln Casey, May 26, 1888