Pennsylvania History Timeline By 143830 Oct 14, 1644 William Was Born William Penn, founder of Pennsylvania, or Penn's Woods, was born. Sep 11, 1740 First mention The first mention of an African American doctor or dentist in the colonies was made in the Pennsylvania Gazette. Feb 16, 1741 Magizines! Benjamin Franklin's General Magazine began publishing. Sep 1, 1752 Liberty Bell In Philadelphia The Liberty Bell arrived in Philadelphia Sep 17, 1778 Fort pitt The 1st treaty between the US and Indian tribes was signed at Fort Pitt. Apr 12, 1787 African Society Philadelphia's Free African Society formed. Apr 12, 1816 Fort Pitt Pittsburgh was incorporated on the site of old Fort Pitt Jul 6, 1830 Gettysburg Vincent Strong , US Union brig-general, died from wounds at Gettysburg. Nov 15, 1840 Chain Gang The Chain Gang, the earliest Mummers club, was formed in Philadelphia. Feb 23, 1846 Liberty Bell The Liberty Bell tolled for the last time, to mark George Washington's birthday. Jun 2, 1891 Free Library Pennsylvania’s first free library was chartered Jul 4, 1956 Historical Park Independence National Historical Park formed in Philadelphia Nov 3, 1964 Sports Philadelphia voters approved $25 million to build a new sports stadium. Feb 8, 1966 Pittsburgh Penguins Pittsburgh was formally granted a NHL franchise. Jan 21, 1979 Pittsburgh Steelers The Pittsburgh Steelers became the first team to win three Super Bowls Jan 4, 1988 Water Drinking water began to dry up in Pittsburgh suburbs because of a massive diesel oil spill Nov 21, 1999 Bus driver killes A Penn State student and a bus driver were killed when 4 charter buses crashed on I-80 in heavy fog Sep 17, 2007 Roman Catholic Diocese The Roman Catholic Diocese of Pittsburgh said it has created a $1.25 million fund to settle 32 lawsuits alleging abuse or injury by priests Sep 24, 2009 Obama In Pennsylvania US Pres. Obama hosted a 2-day meeting of the G20 as it opened in Pittsburgh May 28, 2010 Friendshp treaty Someone signed a friendship treaty with Lenni Lenape Indians in Pennsylvania. It became the only treaty "not sworn to, nor broken."