This large action calendar print of a cowboy driving the herd up a hill was made in January 1949.

Printed on the front: Copyright 1946, R. E. South Made in U.S.A.

The Desert Caballeros Western Museum in Wickenburg, AZ is selling a Giclee (inkjet) print of this in a 16 2/3 x 20 inch size.

Sizes I have found:
5 1/4 x 7 inches
6 1/2 x 9 inches
18 x 24 inches

From a 1941 painting titled: “Rounding Up the Herd”
Oil on canvas, 24 x 30 inches