History: 1903 view of the Pittsburgh Plate Glass Company in Tarentum, PA, in operation, from a series of stereoscopic photos linked in the comments. [3281x3341]

https://i.redd.it/mswnqygiyd131.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/buw6g4/1903_view_of_the_pittsburgh_plate_glass_company/?utm_source=ifttt