Rider Nikolay Sverchkov (1817-1898)

The picture has something of this: cavalry, seated, mammal, horse, lithograph, mare, equine, equestrian, people, stallion, farm, mane, pony, mustang, saddle, bridle.
Perhaps it’s a drawing of a man riding on the back of a white horse in a field with tall grass in the foreground and a brown sky in the background.