This unique map is based upon one designed and published by C.S. Wertsner & Son. Although it was originally designed as a guide map, this version of the map was used by the Chief Engineer's Office of the Pennsylvania Railroad and updated by hand with railroad ownership information. The added legend at bottom identifies the tracks of six different railroad companies, with the Pennsylvania Railroad dominating the city's railroad network. Manuscript annotations identify other items of interest to the railroad, including rail yards, passenger/freight stations, and rail connections. Dissected and laid down on linen. Self-folds into brown cloth wrappers.

The Pennsylvania Railroad was established in 1846 and by the 1880s had become the largest railroad (and corporation) in the world. It continued to prosper and grow by acquisition through the first half of the 20th century. The Pennsylvania Railroad merged with the New York Central in 1968, resulting in the Penn Central, but the combined company met its demise only two years later. The assets of the Pennsylvania Railroad are now owned by Amtrak and Norfolk Southern.

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Condition: B+

Issued folding, dissected and backed with linen. There is some occasional light soiling and a few panels at bottom and left that are stained due to the adhesive used to attach the cloth wrappers.