Dallas scene is historically and visually accurate. Outside shot of building that Perry Mason and David Gideon enter in downtown Dallas is that of the Dallas County Courthouse (also known as the "Old Red Courthouse" or "Old Red") located on 100 S. Houston Street (across from infamous Dealey Plaza). Construction of "Old Red" began in 1892, architect Max A. Orlopp, in the Richardson Romanesque style, with the primary building material of distinctive red sandstone. Established as a museum in 2007, "Old Red" is beautifully restored and filled with gems from Dallas history.
From 1943 to 1945, George Macready, art expert "Dr Kenyon," co-owned an art gallery, The Little Gallery in Beverly Hills, with Vincent Price.