Market place, Philadelphia, Pennsylvania. Coloured aquatint by P. Fumagalli, ca. 1820. https://www.rawpixel.com/image/13958931/image-plant-person-treeFree Image from public domain licenseView from Philadelphia City Hall. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3295122/free-photo-image-advertisement-asphalt-automobileFree Image from public domain licensePhiladelphia, Pennsylvania: view across rooftops. Photograph, ca. 1880. https://www.rawpixel.com/image/14014755/philadelphia-pennsylvania-view-across-rooftops-photograph-ca-1880Free Image from public domain licenseChestnut Street, Philadelphia, Pennsylvania: a horse and carriage in the foreground. Photograph by Francis Frith, ca. 1880. https://www.rawpixel.com/image/14008891/photo-image-horse-person-skyFree Image from public domain licenseBroad Street, Philadelphia, Pennsylvania. Photograph, ca. 1880. https://www.rawpixel.com/image/14005875/broad-street-philadelphia-pennsylvania-photograph-ca-1880Free Image from public domain licenseFairmont Park, Philadelphia, Pennsylvania: an aerial view showing the Schuylkill River. Photograph, ca. 1880. https://www.rawpixel.com/image/14016130/photo-image-plant-tree-skyFree Image from public domain licenseMarket Street, Philadelphia. Photograph by Francis Frith, ca. 1880. https://www.rawpixel.com/image/14002877/market-street-philadelphia-photograph-francis-frith-ca-1880Free Image from public domain license