Florence Elliott White McClung (July 12, 1894-1992) was an American painter, printmaker, and art teacher who was associated with the Dallas Nine, an influential group of Dallas-based artists.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Florence_McClung
Squaw Creek Valley by Florence McClung
1937 / Oil on canvas / 24-1/4″x30-1/4″ / Dallas Museum of Art, Dallas, TX
Florence McClung on Artnet: http://www.artnet.com/artists/florence-mcclung/