Philadelphia is in the Commonwealth of Pennsylvania, not the State of New York.
Philadelphia is located approx 80 miles south of New York City which is in the southeast corner of New York State.
Boston is in Massachusetts and is the capital and largest city, Philadelphia is in Pennsylvania and its' largest city, and New York (City) Is in New York.
It would take about 1 hour to fly from New York City to Philadelphia.
New York [City] and Philadelphia
New York City, Philadelphia, DC
New York City and Philadelphia.
New York, then Philadelphia
Philadelphia
New York City
New York City was the capital of the US under George Washington.
Philadelphia.
Both Philadelphia and New York had ports and were centers of shipping and trade.
Philadelphia, New York City, Baltimore, and Chicago.