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The Oregon Treaty June 15, 1846

ART. I. From the point of the forty-ninth parallel of north latitude, where the boundary laid down in existing treaties and conventions between the United States and Great Britain terminates, the line ...
Billings Gazette

45th Parallel Bridge and Boiling River

A sign north of where the road crosses the Gardner River marks the 45th parallel of latitude. The 45th parallel is an imaginary line that circles the globe halfway between the equator and the North ...
insider.si.edu

Report of exploration of a route for the Pacific railroad : near the thirty-second parallel of latitude, from the Red river to the Rio Grande / by Brevet Captain John Pope ...

Prefatory letter on page [3] from Pope to Jefferson Davis, Secretary of War, is dated Washington, D.C., October 17, 1854. "The maps for this report are numbers 8 and 9 of the atlas" --H.R. Wagner.
insider.si.edu

Report of explorations for that portion of a railway route, near the thirty-second parallel of latitude, lying between Doña Ana, on the Rio Grande, and Pimas villages, on the ...

The report is dated on page 3: Washington, D.C., August 22, 1854. "Route near the thirty-second parallel. Extract from Report of Lieutenant Colonel Emory, of a military reconnaissance made in 1846 and ...