The Federal Tax list of 1798 includes this stable as an asset of Edward H. Calvert of Mt. Airy. It measured 26 feet wide and 64 feet long and was built of brick in common bond with ventilating slits that were later filled in. The photograph was taken before the purchase of Mount Airy by Cissy Patterson. Mrs. Patterson added living quarters, a fireplace, a hay carrier for the loft, and a cupola.