After Sonia Cornwall's father died in 1939, her mother inherited the Onward Ranch and a huge debt. To make the ranch viable, a twenty-year-old Sonia traded paintbrush for pitchfork, labouring alongside the male ranch hands. But after marrying Hugh Cornwall in 1947, Sonia had time for painting once again. She learned techniques from some of Canada's most celebrated artists who came to visit the Onward Ranch, and later her home at the Jones Ranch, from...