It's a long drive, but the last time I saw them on a building was on Hy. 45, heading south from Memphis toward Alabama. They were just south of getting on 45 and were on the right side of the highway.

Jack Sim

Author, 1st & 2nd editions of Gas Pump ID book, 3rd edition is now available at www.gaspumpbible.com
Air Meter ID book also available