Inscribed on mat, "Sketch of Charles Whitehorn - 'Osage Orator'"; "Inscribed, "Osage. For many years this man was the religious leader of this notable oil-rich tribe. Pureblood, longtime second-chief and majestic orator, his portrait was commissioned in 1960. This was a study for that painting. He reportedly was the first in the tribe to own an automobile"
Signed, "Charles Banks Wilson - 60" in lower right on recto
