Original pencil on paper drawing of a Native American Indian warrior on horseback, 10" by 8" (14" by 12" framed), signed at lower left by listed Montana artist SANDY INGERSOLL (1908-1989). This is perhaps a workout sketch---almost a tracing paper illustration type of drawing---for a more finished drawing or, later, painting. Ingersoll was born near Helena, Montana and would have been in his teens when Charlie Russell died in 1926. Ingersoll lived in western Montana most of his life. A hardcover book was published in 1974: "The West of Sandy Ingersoll" by Moynahan and Tromp. Ingersoll is considered to have been among the last of the old time Montana cowboy artists, and the book told the story of his life and work, with 93 works illustrated. Ingersoll worked in oil, graphic art, and ink/watercolor/pencil. This drawing has some wrinkling of the thin paper, as shown. Note that all photos were taken through non-glare glass, which dulls sharpness and detail. The presentation would improve with a proper mat and perhaps a silvery wood frame.