Striking example of this detailed plan of Philadelphia, showing wards, streets, public buildings, ferrys, Windmill or Smith Island, Cooper's Point, steamboat routes, and a host of railroad and other details.
From an early edition of the SA Mitchell Jr. New General Atlas, perhaps the most popular and enduring of all American atlases published after the Civil War.
Samuel Augustus Mitchell Jr. inherited the Mitchell Company from his father in 1860. For over thrity years, the company had specialized in the production of school atlases and wall maps of America. They were one of the pioneers on engraving on steel plates. In 1860, Samuel Jr. released the New General Atlas, which had been compiled in house and replaced a previous atlas by Tanner. The elder Mitchell died in 1868 and Samuel Jr. continued the business until the 1890s. At its height, the Mitchell Company employed 250 people and sold 400,000 publications annually.