There are about 250 children's hospitals in the U.S.; the first was founded in this Pennsylvania city in 1855
It had access to the... [DOC] [TLE] Pennsylvania facts, information, pictures | Encyclopedia.com articles ... [PAR] Beginning in the southeast, the first region (including Philadelphia) is a narrow ... 
Pennsylvania contains about 250 natural lakes larger than 20 acres (8 hectares), 
... During early geological history, the topography of Pennsylvania had the 
reverse of its ..... (1839), with the Lehigh Valley (1846), and with New York City (
1855).