Stinson, A. R.
Stokes, M. W.
Stoll & Thayer.
Stone & Stewart.
Strahan, Charles Morton, 1864-1947.
Street, Samuel M.
Strickland, Tom C.
Stringfellow, U. K.
Strobridge & Co. Lith.
Strong, J. M.
Strum, G. P. (Gustave P.)
Stuart, David, 1753-1811.
Stuart, John, 1718-1779.
Sturtevant, William C.
Swensson, J. A.
Sykes and Gwathmey.
Sykes, George, 1802-1880.
T. & J. Slator, C.E.
T. Crawford Redd & Brother.
T. Sinclair's Lith.
Taber, A. C., C.E.
Taintor, Dawson & Co.
Tanner, Henry Schenck, 1786-1858.
Tanner, Vallance, Kearny & Co.
Tate, George W.
Taylor, Herman (Cartographer)
Taylor, Robert (Surveyor)
Tennessee Valley Authority.
Terhune & Letson.
Texas & Pacific Railway.
Texas & Pacific Railway. Land Department.
Texas Land and Immigration Co.
Texas. General Land Office.
Texas. Reclamation Department.
Tharp, John Allen.
Thielepape, Geo. J.
Thomas Reynolds & Robert Pearsall Smith, Publishers
Thomas, B. F.
Thomas, Cyrus, 1825-1910.
Thomas, John, engineer, the Elder.
Thompson & Everts.
Thompson, M. H.
Thornton, John, 1641-1708.
Thos. S. Wagner's Lith.
Thrift Press (Rockford, Ill.)
Throckmorton, S. R.
Thweatt, J. G. (Joseph Gustavus), 1852-1937
Tide Water Canal Company.
Tiebout, Cornelius, 1777-1832.
Tilden, S. D. (Samuel D.)
Tillson, Oliver J.
Titus, C. O.
Toner, Joseph M. (Joseph Meredith), 1825-1896.
Tong yong tu shu you xian gong si.
Torres y Guerra, Alonso de.
Torres, Manuel Guirez de.
Torrey, Jason, 1772-1848.
Toudy, H. J.
Tracy & Rutt
Traubel, M. H. (Morris H.), 1820-1897.
Treveres, J. J.
Trine, Z. V.
Trudeau, Charles Laveau, approximately 1750-1816.
Tucker, M. G.
Tutor y Malo, Francisco.
Tuttle & Co. (Philadelphia, Pa.)
Ulloa, Antonio de, 1716-1795.
Union Pacific Railroad Company.
United States Coast Survey.
United States Employment Service.
United States Military Academy.
United States. Army of the Cumberland. Topographical Engineers Office.
United States. Army of the Potomac. Engineer Department.
United States. Army. Corps of Engineers.
United States. Army. Corps of Topographical Engineers.
United States. Army. Corps, 23rd (1863-1865). Topographical Engineers.
United States. Army. Department of the Cumberland. Topographical Engineers.
United States. Army. Department of the Tennessee. Topographical Engineers.
United States. Army. Office of the Chief of Engineers.
United States. Bureau of Refugees, Freedmen, and Abandoned Lands.
United States. Bureau of Topographical Engineers.
United States. Bureau of the Census.
United States. Bureau of the Census. Geography Division.
United States. Census office. 11th census, 1890.
United States. Census office. 9th census, 1870.
United States. Central Intelligence Agency.
United States. Central Intelligence Agency. Cartography Center.
United States. Central Intelligence Agency. Design Center.
United States. Central Intelligence Agency. Directorate of Intelligence.