701246 Joseph Harrison Residence, 227 South 18th, East Rittenhouse Square, 1866 (albumen print) by American Photographer, (19th century); Free Library of Philadelphia; (add.info.: "The Harrison Mansion was built in 1852 by Joseph Harrison, Jr., internationally famous engineer and inventor, who constructed Russia\'s first railroads. On this site now stands the Signal Corps Building, formerly the Penn Athletic Club. The house at the extreme right, at 18th and Locust, was the residence of J. Kearsley Mitchell, noted physician."--OPEP, p. 152. ); 穢 Free Library of Philadelphia ; American, out of copyright.