Early Stony Plain Postal Service Artist: Terry Gregoraschuk, Calgary, AB Size: 504 sq. ft. 1991 A series of stamps depicts milestones and postmasters in the history of the Stony Plain mail service. Far left shows John L. McDonald, first settler and postmaster, who had applied for the post office in 1892 and obtained the name “Stony Plain.” George Sutherland was first official mail cater, riding his horse into Edmonton to collect mail.