1. A map of Buck Mountain coal company mines exhibiting their relative position to the Lehigh slack water navigation and the different coal mines now opened in the region. Drawn by A.L. Foster of J. Collins 1820 (?) Lith Yale Public content 1820. 2008-06-24T19:00:02Z. 2020-07-02T12:57:16Z. English. Public. Pennsylvania.
2. Mantua Village & Roads in its Vicinity, situated 3 iles from the old Court house of Philadelphia, in Blockley. W. side of Schuylkill, on lands of Richard Peters Esqr. by Samuel Hains, Surveyor Yale Public content 1820. 2008-06-24T19:38:31Z. 2020-08-18T19:34:30Z. English. Public. Pennsylvania.