Transportation and Communication
Seaboard Air Line Railroad Company.
Seaboard and Raleigh Railroad.
Seaboard, Pennsylvania, and Western Railroad.
Seymour & Tower.
Shall, D. F.
Sheafer, P. W. (Peter Wenrick), 1819-
Sheaff, J. A.
Shenandoah Valley Railway Company.
Sherman & Smith.
Shore Line Railroad.
Sibley, George Champlin, 1782-1863.
Sidell, William Henry, 1810-1873.
Simpson, J. H. (James Hervey), 1813-1883.
Sinclair, Thomas S., approximately 1805-1881.
Smith, J. Calvin (John Calvin)
Smith, J. K. L.
Sneden, William S., 1829-1905.
Snow & Wilder.
Snyder & Black Lithogrs.
Snyder, George, approximately 1820-
Sodus Point and Southern Railroad.
Sonnenstern, Maximilian von.
Sotzmann, D. F.
South Carolina Canal and Railroad Company.
South Pacific Railroad Company of Missouri.
Southern Continental Railroad.
Southern Maryland Railroad.
Southern Pacific Railroad Company.
Southern Railway (U.S.)
Spain. Dericción de Hidrografía
Speer, Joseph Smith.
St. John, I. M.
Stanstead, Shefford, and Chambly Railroad.
Steiger, W. T.
Stevens, Isaac Ingalls, 1818-1862.
Strickland, William, 1787-1854.
Sunbury and Erie Rail Road Company.
Sweet, S. H. (Sylvanus Howe), 1830-1899.
Swift, W. H. (William Henry), 1800-1879.
Tanner, Henry Schenck, 1786-1858.
Tappan & Bradford.
Teben'kov, Mikhail Dmitrievich, -1872.
Tennessee, Alabama, and Georgia Railroad.
Terre Haute and Richmond Railroad.
Texas & Pacific Railway.
Texas and New Orleans Railroad Company.
Thomas, Cowperthwait & Co.
Thomas, G. F.
Thomson, J. Edgar (John Edgar), 1808-1874.
Through Traffic Railway.
Tiebout, Cornelius, 1777-1832.
Toledo, Ann Arbor, and Grand Truck Railway.
Toledo, Ann Arbor, and North Michigan Railway Company.
Toledo, Cincinnati, and St. Louis Railroad Company.
Toledo, Peoria & Warsaw Railway.
Toledo, Wabash, and Great Western Railroad.
Trautwine, John C. (John Cresson), 1810-1883.
Tunis, W. E.
Tunison, E. L.
Tyrone and Lock Haven Railroad Company.
U.S. Coast and Geodetic Survey.
U.S. Customs Service.
Union Pacific Railroad Company.
Union Pacific Railway Company.
United States Coast Survey.
United States. Army Map Service.
United States. Army. Air Corps.
United States. Army. Corps of Engineers.
United States. Army. Corps of Topographical Engineers.
United States. Army. Quartermaster Corps.
United States. Army. Signal Corps.
United States. Board of Engineers for Rivers and Harbors.
United States. Board of Internal Improvement.
United States. Central Intelligence Agency.
United States. Congress. House.
United States. Congress. Senate.
United States. Department of Commerce.
United States. Department of Commerce and Labor. Bureau of Statistics.
United States. Federal Aviation Administration.
United States. General Land Office.
United States. Mississippi River Commission.
United States. Post Office Department.
United States. Post Office Dept.
United States. Post Office Dept. Division of Topography.
United States. Railway Mail Service.
United States. War Department.
United States. War Dept. Office of P. R. R. Surveys.
Van Cleef, John T.
Vaughan, David, active 1849-1864.
Verlag von Mitscher & Röstell.
Virginia Central Railroad Company.
Virginia, Kentucky, and Ohio Railroad.