The Soul of a Horse

The Soul of a Horse (Mare With Foal) was a 1963 photo taken by the German photojournalist and Stern magazine staffer Peter Thomann which won countless praise all over the world and many awards.

In the mid-1970s the Kentucky Horse Park near Lexington opened its doors to the public, using a logo based on the photograph. The icon of the dark colored mare and a light colored foal in mid-run eventually found its way to the Kentucky Horse Park specialty license plate as well. In the late 1990s, Thomann sued, causing the image to be removed from the license plate and replaced with another. The horse park made an agreement with Thomann and kept their logo with his permission.

Vehicle registration plates of Kentucky

...
Wikipedia