Old Glassworks. On this site, the first glass factory west of the Monongahela River was established in 1805 through the stimulating influence of Albert Gallatin, Secretary of the Treasury under Thomas Jefferson. Glass was made here until 1849. SR 2014, Greensboro, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: [geolocate this address] Google Streetview OpenStreetMap
