by J Johnstone
Below is a URL for the oldest know drawing of P,G & N's Norristown line crossing the Wissahickon Creek back when it opened in 1834. Below to the right is Robeson's gristmill. Enjoy!
http://processandpreserve.files.wordpre ... 46_001.jpg
(Edit: Railroad bridge over the Wissahickon Creek, near the Manayunk section of Philadelphia PA - Scot)
http://processandpreserve.files.wordpre ... 46_001.jpg
(Edit: Railroad bridge over the Wissahickon Creek, near the Manayunk section of Philadelphia PA - Scot)