NHD .

What need in society did the innovation fill and what changes occurred to society because of the innovation?
The need that the newspaper press filled was the need to know what was going on in your area and around the world .

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