| GeoHistory Resources | 
| Hexamer General Surveys, Volume 4Columbia WorksPlate(s): 304 Facility Name: Columbia Works Owner: Uhlinger, W.P. Products Made: Machinery-Textile Production Products Made: Machine Shop Ward: 19 Address: Hancock St, Columbia Ave, and Masher St (NE corner) Location: Philadelphia, Philadelphia County, Pennsylvania Work Title: Hexamer General Surveys, Volume 4 Creator: Ernest Hexamer Source: Image File(s): 
			HGSv4.0304 
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