This is a small collection of three postcards. Two postcards have images of Pennsylvania Railroad stations in Greensburg and Swissvale, Pennsylvania. The third postcard is an advertisement for Pennsylvania Cement Co. showing the Whitney (N.C.) Dam. The Pennsylvania Railroad (PRR) was chartered in 1846 to completing an all-rail road across the state. In 1857 the Pennsylvania Railroad purchased the old Main Line system and eventually brought the entire line from Philadelphia to Pittsburgh under one management.