Sharp is known to have visited the Shoshone and Arapaho Reservation in central Wyoming the summer of 1907. He wrote this in a letter from Fra Dana's Parkman, Wyoming 2A Ranch to his Cincinnati friend J. H. Gest in November that year. (Sharp Papers)  This is a view of the east side of the Wind River Mountains.

This may be the painting Sharp exhibited some years after its creation,  A painting by the name of Wind River Country - From Fort Washakie, Wyoming was presented in 1916 at Cincinnati's Traxel Art Galleries in the exhibition Indian and Wester Paintings. A similarly titled work, Wind River Country, Wyo was shown at the same venue in 1925.

Sharp painted many portraits among the two tribes.  Exemplary of those efforts was a portrait of the Arapaho man, Quiver.  (see related image, #483)