Associated Press Photo by LM Otero Museum curator William Keyse Rudolph talks about a painting titled "Bluebonnet Scene with a girl," dated 1920, during a preview of the exhibit "Bluebonnets and Beyond: Julian Onderdonk, American Impressionist" at the Dallas Museum of Art in Dallas on Wednesday. The new exhibit of work by the Texas landscape painter features variations on the subject matter he was best-known for: bluebonnets.