Manuscript Collections Union Canal Papers, 1791-1922. 8 boxes. Presented by George M. Lehman, 1943. Correspondence, 1820-1922;miscellaneous business records, 1822-1887;letter books, 1852-1891; annual reports 1791-1869, maps, charts, diagrams. Historical Society of Berks County Deposit of Records of The Union Canal Company of Pennsylvania 1792-1885 Gordon Chambers Collection On Delaware Valley Navigation Companies, 1792-1823. Papers and correspondence of the Schuylkill and Susquehanna Navigation Company, and the Union Canal Company. External links Middletown Pa Dauphin County history: Union Canal History Lebanon County Historical Society: Union Canal Tunnel Lebanon, PA Union Canal Tunnel Park Photos Swatara State Park Pennsylvania Canal Society American Canal Society National Canal Museum Canals in Pennsylvania Transportation in Pennsylvania Canals opened in 1828 Transportation buildings and structures in Dauphin County, Pennsylvania Union Canal Transportation buildings and structures on the National Register of Historic Places in Pennsylvania National Historic Landmarks in Pennsylvania Transportation buildings and structures in Berks County, Pennsylvania Transportation buildings and structures in Lebanon County, Pennsylvania Pennsylvania state historical marker significations Historic American Engineering Record in Pennsylvania Historic Civil Engineering Landmarks National Register of Historic Places in Berks County, Pennsylvania National Register of Historic Places in Lebanon County, Pennsylvania National Register of Historic Places in Dauphin County, Pennsylvania Tunnels on the National Register of Historic Places Water tunnels on the National Register of Historic Places Canal tunnels in the United States Tunnels completed in 1827 Water transportation in Pennsylvania