William Bill Alexander: Pioneer of Wet-on-Wet Painting and Inspiration for Bob Ross William Bill Alexander (born Wilhelm Alexander; April 2, 1915 – January 24, 1997) was a German painter, art instructor, and television host who achieved international renown primarily through his innovative approach to oil painting—the “wet-on-wet” technique—and his mentorship of Bob Ross. His distinctive style captivated audiences worldwide and cement…