DCHP-1 Online
portage railroad Hist. 
See 1958 quote.
See also: portage ((n.)) (def. 1b) portage road (def. 3)
- 1946 [Caption] Early Portage Railroads: The Champlain and St. Lawrence Railroad, 1836.
- 1958 [The history of railways in Canada begins in 1832 with . . . the Champlain and St. Lawrence Railroad . . . conceived as a portage link in the water route from the St. Lawrence River to New York.]
- 1946 [Caption] Early Portage Railroads: The Champlain and St. Lawrence Railroad, 1836.