See quotation, 1837.
1837. Youve as clar and broad a trace before you as man and beast could makea buffalo-street through the canes. (Note.) The bison-paths, when very broad, were often thus called.R. M. Bird, Nick of the Woods, i. 42 (Lond.).
1846. From the forks of Clarks river it is about ninety miles to the North Pass, along a well-beaten buffalo road.Mr. Benton of Missouri in the U.S. Senate, May 28: Congressional Globe, p. 916.
1850. The wild animals are the first engineers to lay out a road in a new country; the Indians follow them, and hence a buffalo road becomes a war-path.The same, Dec. 16: id., p. 57.