And an oddity....This was claimed as Annie Oakley and Buffalo Bill Cody in my pinterest feed, when the identifiers are right at the bottom. Pawnee Bill's Show was eventually merged with Cody's Show, at least briefly. May Lillie was a rival ( one of several) of Annie Oakley as a shooter. May and Bill were married for fifty years, and Gordon Lillie, Pawnee's given name, never got over her death.
A US Cavalryman around 1915. Note the Patton Sabre, and hostered 1911. He'd also have carried a 1903 Springfield Rifle, possibly slung on the left side of his Saddle. The coil of rope covers a Picket Pin, which kept his mount from wandering far at night.