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William Penn, founder of Pennsylvania, or Penn's Woods, was born.
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The first mention of an African American doctor or dentist in the colonies was made in the Pennsylvania Gazette.
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Benjamin Franklin's General Magazine began publishing.
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The Liberty Bell arrived in Philadelphia
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The 1st treaty between the US and Indian tribes was signed at Fort Pitt.
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Philadelphia's Free African Society formed.
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Pittsburgh was incorporated on the site of old Fort Pitt
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Vincent Strong , US Union brig-general, died from wounds at Gettysburg.
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The Chain Gang, the earliest Mummers club, was formed in Philadelphia.
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The Liberty Bell tolled for the last time, to mark George Washington's birthday.
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Pennsylvania’s first free library was chartered
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Independence National Historical Park formed in Philadelphia
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Philadelphia voters approved $25 million to build a new sports stadium.
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Pittsburgh was formally granted a NHL franchise.
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The Pittsburgh Steelers became the first team to win three Super Bowls
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Drinking water began to dry up in Pittsburgh suburbs because of a massive diesel oil spill
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A Penn State student and a bus driver were killed when 4 charter buses crashed on I-80 in heavy fog
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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
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In Pennsylvania US Pres. Obama hosted a 2-day meeting of the G20 as it opened in Pittsburgh
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Someone signed a friendship treaty with Lenni Lenape Indians in Pennsylvania. It became the only treaty "not sworn to, nor broken."
