“A listing of the railway post offices, operated by the United States Post Office Department and the United States Postal Service, over railroads and waterways, including the dates of establishments, discontinuances, and changes of names and operation”.

Existe una edición revisada en el año 1997.

Esta obra tiene como complementaria de la del mismo autor titulada “Directory of route agent routes, 1837-1882”, (ver en ficha aparte).

455 pág.