- http://books.google.com/books?id=BNgrAAAAYAAJ&pg=RA1-PA167&lpg=RA1-PA167&dq=printing+press+in+philadelphia+history&source=bl&ots=4f2NX1mxHG&sig=D4aHbwvHjD01hkDuwRdX6QkYppc&hl=en&ei=aeHNSvipCs_i8Qbm07D5Aw&sa=X&oi=book_result&ct=result&resnum=4#v=onepage&q=printing%20press%20in%20philadelphia%20history&f=false
- http://www.phillyfiction.com/more/brief_history_of_early_days_of_philadelphia_publishing.html
- http://www.lancasterlyrics.com/c_ben_franklin/index.html
- http://inventors.about.com/od/pstartinventions/a/printing.htm
- http://library.thinkquest.org/18764/print/history.html
Monday, October 19, 2009
5 sources.
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