| Name | Control | Notes |
| Allentown Terminal Railroad | CNJ | - |
| Ann Arbor Railroad | AA | - |
| Baltimore and Eastern Railroad | PC | - |
| Bay Shore Connecting Railroad | CNJ/LV | - |
| Beech Creek Railroad | PC | - |
| Buffalo Creek Railroad | EL /LV | Merged on December 31, 1983 |
| Central Indiana Railway | PC | - |
| Central Railroad of New Jersey | CNJ | - |
| Central Railroad of Pennsylvania | CNJ | No real property conveyed |
| Chicago, Kalamazoo and Saginaw Railway | PC | - |
| Chicago River and Indiana Railroad | PC | - |
| Cleveland and Pittsburgh Railroad | PC | - |
| Cleveland, Cincinnati, Chicago and St. Louis Railway | PC | - |
| Connecting Railway | PC | - |
| Dayton Union Railway | PC | - |
| Delaware Railroad | PC | - |
| Delaware and Bound Brook Railroad | RDG | - |
| Detroit Manufacturers Railroad | PC | - |
| Dover and Rockaway Railroad | CNJ | - |
| East Pennsylvania Railroad | RDG | - |
| Erie and Kalamazoo Railroad | PC | - |
| Erie Lackawanna Railway | EL | - |
| Erie and Pittsburgh Railroad | PC | - |
| Fort Wayne and Jackson Railroad | PC | - |
| Holyoke and Westfield Railroad | PC | - |
| Hudson River Bridge Company at Albany | PC | - |
| Indianapolis Union Railway | PC | - |
| Ironton Railroad | LV/RDG | - |
| Joliet and Northern Indiana Railroad | PC | - |
| Kalamazoo, Allegan and Grand Rapids Railroad | PC | - |
| Lackawanna and Wyoming Valley Railway | EL | - |
| Lehigh and Hudson River Railway | L&HR | - |
| Lehigh and New England Railway | CNJ | - |
| Lehigh Valley Railroad | LV | - |
| Little Miami Railroad | PC | - |
| Mahoning Coal Railroad | PC | - |
| Mahoning and Shenango Valley Company | PC | - |
| Michigan Central Railroad | PC | - |
| Monongahela Railway | MGA | Merged on May 1, 1993 |
| Mount Hope Mineral Railroad | CNJ | - |
| New York Connecting Railroad | PC | - |
| New York and Long Branch Railroad | PC /CNJ | - |
| Niagara Junction Railway | EL /LV/PC | - |
| North Brookfield Railroad | PC | - |
| North Pennsylvania Railroad | RDG | - |
| Northern Central Railway | PC | - |
| Norwich and Worcester Railroad | PC | - |
| Penn Central Transportation Company | PC | - |
| Penndel Company | PC | Successor to a number of non-operating subsidiaries |
| Pennsylvania and Atlantic Railroad | PC | - |
| Pennsylvania–Reading Seashore Lines | PC /RDG | - |
| Pennsylvania Tunnel and Terminal Railroad | PC | - |
| Peoria and Eastern Railway | PC | - |
| Philadelphia, Baltimore and Washington Railroad | PC | - |
| Philadelphia, Germantown and Norristown Railroad | RDG | - |
| Philadelphia and Trenton Railroad | PC | - |
| Pittsburgh, Fort Wayne and Chicago Railway | PC | - |
| Pittsburgh, Youngstown and Ashtabula Railway | PC | - |
| Plymouth Railroad | RDG | - |
| Port Reading Railroad | RDG | - |
| Raritan River Railroad | PC /CNJ | Merged in April 1980 |
| Reading Company | RDG | - |
| Rochester and Genesee Valley Railroad | EL | - |
| Shamokin Valley and Pottsville Railroad | PC | - |
| South Manchester Railroad | PC | - |
| Trenton–Princeton Traction Company | RDG | - |
| Troy and Greenbush Railroad | PC | - |
| Union Depot Company (Columbus, Ohio) | PC | - |
| Union Railroad of Baltimore | PC | - |
| United New Jersey Railroad and Canal Company | PC | - |
| Waynesburg Southern Railroad | PC | - |
| Waynesburg and Washington Railroad | PC | - |
| West Jersey and Seashore Railroad | PC /RDG | - |
| Wharton and Northern Railroad | CNJ | - |
| Wilmington and Northern Railroad | RDG | - |
| American Contract Company | PC | No real property conveyed |
| Communipaw Central Land Company | CNJ | - |
| Consolidated Real Estate Company | LV | - |
| Despatch Shops, Inc. | PC | - |
| Eastern Real Estate Company | RDG | - |
| Erie Land and Improvement Company | EL | - |
| Erie Land and Improvement Company of Pennsylvania | EL | - |
| Hoboken Ferry Company | EL | - |
| Hudson Realty Company | EL | - |
| Lawroy Land Company | EL | - |
| Manor Real Estate Company | PC | - |
| New York Central Development Corporation | PC | - |
| Penndiana Improvement Corporation | PC | - |
| Providence Produce Warehouse Company | PC | - |
| United Real Estate Company | LV | - |