Leon's Signs - 851 E NE Loop 323, Tyler, TX 75708. Opened in 1946 by Leon Graham, the current facility (seen here) opened in 1965, and is still in operation over 60 years later. The building has, in the last few years, been cleaned up, painted, and had a few changes made to the facade. A second workshop/warehouse appears to have been added in the years after this photo was taken, directly behind this original building.