There are some fascinating railroad photographs from an earlier era in the Pennsylvania Railroad Photographs collection: https://historicpittsburgh.org/collect

There are some fascinating railroad photographs from an earlier era in the Pennsylvania Railroad Photographs collection: https://historicpittsburgh.org/collection/pennsylvania-railroad-photographs https://historicpittsburgh.org/collection/pennsylvania-railr... Many of the photographs feature gnarled old railroad bridges because of the hills and rivers in the region. Because of the region's steel industry, many photograph also feature smoke stacks and dirty skies. Here is how the collection is described: """The Pennsylvania Railroad collection, held by the Archives Service Center, includes 345 (nearly all of which are 8x10 in size) gelatin dry plate images of railroad infrastructure dating from 1907-1917. Many of the images depict construction and repair projects to the company's lines, both within the city of Pittsburgh, as well as across the Midwest. Featured prominently in the collection is the renovation and construction of the second track for the Ohio Connecting Railway Bridge, located just north of downtown Pittsburgh. The collection also includes numerous views of track re-grading operations which occurred in Pittsburgh, as well as other major cities including Cleveland, Chicago, Cincinnati, Indianapolis, and Detroit."""