Unofficial nickname. probably applied to Pennsylvania from the late 18th C. The first official citation is from 1802, when at a rally Pennsylvania was toasted as "the keystone in the union".
The scroll at the bottom reads "Virtue, Liberty and Independence".
Federal Correctional Complex
United States Penitentiary
Federal Correctional Institution
Joined union in 1787, quarter released in 1999
Yes, the worlwide Hershey headquarters is located in Hershey, Pennsylvania, complete with street lamposts where the lights are fashioned into the shape of Hershey Kisses
Name refers to the mountain lions that once roamed nearby and to Mt Nittany, a local landmark
6th among all States and Territories
Fourth oldest institution of higher education in the US