This hand-colored 1867 lithograph by architect Samuel Sloan (1815–84) was a plate in an architectural design book; it illustrated the front facade of a symmetrical, Italian-style, suburban mansion. The mansion was located on the edge of Rittenhouse Square, on the northeast corner of 18th and Locust Streets. It was built in 1855–57 after designs by Samuel Sloan, for Joseph Harrison, Jr., a prominent Philadelphia man known for his innovative design of a locomotive engine. This print was produced by the firm of Louis N. Rosenthal, a pioneer chromolithographer who operated the Philadelphia firm Rosenthal’s Lithography with his brothers Max, Morris, and Simon from circa 1851–72. Rosenthal was born in Turck, Russian Poland around 1824, and immigrated to the United States in 1848.