Paterson, Passaic, and Rutherford Electric Railway.
Patterson, S. C.
Philadelphia & Reading Railroad Co.
Philadelphia Board of Trade. Committee on Inland Transportation.
Philadelphia and Erie Railroad.
Philadelphia, Easton and Water Gap Railroad Company.
Philadelphia, Wilmington, and Baltimore Rail Road Company.
Phoenixville Cornwall Railroad.
Pinegrove Lancaster Railroad.
Pittsburgh, Bradford, and Buffalo Railway.
Pittsburgh, Fort Wayne, and Chicago Railway Company.
Pittsburgh, Marion, and Chicago Railway.
Plymouth, Kankakee, and Pacific Railroad.
Polley, J. F.
Poole, Henry W. (Henry Ward), 1825-1890.
Poor, Henry V. (Henry Varnum), 1812-1905.
Pope, John, 1822-1892.
Port Royal Railroad.
Portland & Ogdensburg Railroad Company.
Potomac and Ohio Railway.
Potomac, Fredericksburg, and Piedmont Railroad.
Preuss, Charles, 1803-1854.
Price, John, scripsit.
Rabun Gap Railroad.
Rand Avery Supply Co.
Rand McNally and Company.
Reading & Columbia Railroad Company.
Reed, A. J.
Richardson, Alfred M.
Richmond and Danville Railroad Company.
Richmond and Louisville Railroad.
Richmond, Van R.
Ridgway, Thomas S.
Rio Grande and Pecos Railway Co.
Ritchie & Dunnavant.
Robert, W. F.
Roberts, Solomon W. (Solomon White), 1811-1882.
Roberts, W. Milnor (William Milnor), 1810-1881.
Robertson & Seibert.
Robertson, Seibert & Shearman.
Rockford, Rock Island, and Saint Louis Railroad Company.
Royal Land Company.
Ruggles, T. C.
Rutland and Burlington Railroad.
Sabine and Galveston Bay Railroad.
Sacramento Valley Railroad.
Sage (J.) & Sons.
Sanford, E. D.
Savannah and Memphis Railroad.
Schönberg & Co.
Schuchman, William, 1823 or 1824-
Schultz, John H. (Publisher)
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.
Sidell, William Henry, 1810-1873.
Sinclair, Thomas S., approximately 1805-1881.
Smith, J. Calvin (John Calvin)
Sneden, William S., 1829-1905.
Snow & Wilder.
Snyder & Black Lithogrs.
Snyder, George, approximately 1820-
Sodus Point and Southern Railroad.
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.)
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.
Tanner, Henry Schenck, 1786-1858.
Tappan & Bradford.
Tennessee, Alabama, and Georgia Railroad.
Terre Haute and Richmond Railroad.
Texas & Pacific Railway.