This image shows a few feral horses against the dramatic backdrop of the Wyoming plateau.
Genuine Natural Color Made by Dexter Press, Inc., West Nyack, N.Y.
The description states simply:
#3749 Horses on the Range
The two multi-colored horses are typically referred to as ‘paints‘ and is a very common breed, while the other is more commonly described as ‘palomino‘.
This card was used and is dated July 1955.