1829  When sleighs, in the snow-roads, form one cahot or wave, others follow directly in regular succession; for the heave they make when descending from the crown of the cahot, creates a valley beyond.
1883  . . . as they are in the vicinity of the mill, they can be drawn direct to it on the snow-roads, just when they are cut. . . .
1945  . . . letters to him in 1876 . . . are full of questions about the condition of his snow-roads in the bush, about the prospect for "driving" on the streams in the spring.