4.6”x7.2”. Note cards on textured linen stock, blank inside, with white envelopes. To order more than 19, you must choose "19+" from the quantity drop-down, and then edit the number for the quantity you desire. The Pennsylvania Railroad was established in 1846 and was headquartered in Philadelphia, Pennsylvania. By 1882, the Pennsylvania Railroad had become the largest railroad (by traffic and revenue), the largest transportation enterprise, and the largest corporation in the world. This poster also features the Ruffed Grouse, Pennsylvania's state bird. Original artwork by Catherine LaPointe Vollmer.