- Post Office Mural - Purcell OKThis dramatic New Deal mural was painted by Fred Conway in 1940. It was one of the winners of the Treasury Section's 48-State Competition Post Office Murals. Interestingly, this mural was initially slated to go into the Jackson, MO PO, but the Jackson townspeople wanted a more modern representation for their PO and this was then sent to Purcell. The artist Fred Conway is from St. Louis.