philadelphia is home to the original us library
philadelphia is the birthplace of the united states marine corps  and is also the home of many us firsts  including the first library lrb 1731 rrb  first hospital lrb 1751 rrb and medical school lrb 1765 rrb  first capital lrb 1777 rrb  first stock exchange lrb 1790 rrb  first zoo lrb 1874 rrb  and first business school lrb 1881 rrb