Dox Thrash, "Chromatic Tunes," c. 1938.

Dox Thrash, "Chromatic Tunes," c. 1938.

Dox Thrash, "Chromatic Tunes," c. 1938.

Dox Thrash, Chromatic Tunes, c. 1938, watercolor on paper. Collection of the Everhart Museum of Natural History, Science & Art, image courtesy of Dolan/Maxwell.

IMAGE: Penn State