A gold-rush trail cutting through the hunting grounds of the Northern Plains Indians in Montana and Wyoming, U.S.
Guide to this eastern U.S. highway system of the early 1900s.
Guide to the first federally-funded road in the U.S. (1800s) and the route which followed it later (US 40).
United States Federal Highway Administration page with a collection of various auto trail, U.S. highway, and Interstates histories, some from older FHWA publications, as well as other related information.
Description and photos of former US 80 through California and Arizona including the old plank road.
Guide to the old highway along the northern tier of the United States.
Early plans for systems in the United States, some implemented, some not.
Catalog of auto trails from the United States and Canada in the 1910s and 1920s; includes route markers and current numbers.
History and photographs from the ones in the western part of the state and nearby areas.
Management plans and interactive maps about this trail which traverses the country of Mexico and the U.S. state of New Mexico.
Recreation /
Roads_and_Highways /
Bridges_and_Tunnels
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