Springtime in the Rockies (1937)
Springtime in the Rockies is a 1937 American Western film directed by Joseph Kane and starring Gene Autry, Smiley Burnette, and Polly Rowles. Written by Gilbert Wright and Betty Burbridge, the film is about a beautiful young ranch owner who brings a flock of sheep into cattle country and faces the opposition of local ranchers with the help of her ranch foreman.
More at Wikipedia.