| GeoHistory Resources | 
| Map of the Delaware River showing sites of the dredging for the proposed 30-foot channel by the City of Philadelphia. , 1907MapWork Title: Map of the Delaware River showing sites of the dredging for the proposed 30-foot channel by the City of Philadelphia. , 1907 Date: 1907 Description: 2004.058.0049 Source: Image File(s): 
			PWD1907-3 
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