William & Mary is the second-oldest institution of higher learning in the US, founded in 1693, and is a public research university in Williamsburg, Virginia, and has been attended by many prominent figures, such as Thomas Jefferson, James Monroe and Jon Stewart.
College of William & Mary
Yale is the third-oldest institution of higher learning in the US, founded in 1701, and is an Ivy League university in New Haven, Connecticut, and has been mentioned above as a comparable entity to Harvard regarding academic affiliation.
Penn is the fourth-oldest institution of higher learning in the US, founded in 1740, and is an Ivy League university in Philadelphia, Pennsylvania, and has been mentioned above as a comparable entity to Harvard regarding academic affiliation.
University of Pennsylvania
Princeton is the fifth-oldest institution of higher learning in the US, founded in 1746, and is an Ivy League university in Princeton, New Jersey, and has been mentioned above as a comparable entity to Harvard regarding academic affiliation.
Columbia is the sixth-oldest institution of higher learning in the US, founded in 1754, and is an Ivy League university in New York City, New York, and has been mentioned above as a comparable entity to Harvard regarding academic affiliation.