• Map
    Hammond's bird's-eye view map of Philadelphia and vicinity F51816 U.S. Copyright Office Perspective map not drawn to scale. LC Panoramic maps (2nd ed.), 831.2 Available also through the Library of Congress Web site as a raster image. AACR2
    • Contributor: Spofford, Edward W. - C.S. Hammond & Company
    • Date: 1926