Baltimore and Ohio Railroad | Pennsylvania Railroad | Union Pacific Railroad | Concord, New Hampshire | Concord | Underground Railroad | New York Central Railroad | Alaska Railroad | Erie Railroad | Concord, Massachusetts | Central Pacific Railroad | Illinois Central Railroad | First Transcontinental Railroad | Lehigh Valley Railroad | St. Paul's School (Concord, New Hampshire) | Lehigh and Susquehanna Railroad | Grand Funk Railroad | Battles of Lexington and Concord | Chicago, Milwaukee, St. Paul and Pacific Railroad | Wabash Railroad | Railroad switch | Missouri Pacific Railroad | Boston and Albany Railroad | Book of Concord | New York, New Haven and Hartford Railroad | Metro-North Railroad | Grand Rapids and Indiana Railroad | Atlantic Coast Line Railroad | Albany and Susquehanna Railroad | Oregon Pacific Railroad |
Soon after his resignation, Upham accepted a position as general superintendent of the Concord Railroad, a train line connecting Concord to the Boston and Lowell Railroad.