The "keystone" in Baseball usually refers to second base. It's called such because it is important in scoring (since a runner on second is in "scoring position") and because it's a key defensive position.
The Keystone State A keystone is the architectural piece at the crown of a vault or arch which marks its apex, locking the other pieces into position. A reference from the 13 original colonies of the United States
keystone=================A different answerPennsylvania is known as known as the Keystone State, but that is due to its physical position in the middle of the 13 colonies as well as its key position in the political and socioeconomic development of the country. A keystone is not a kind of stone, but is a structural wedge placed at the top of an arch to hold the arch in place.That being said, the State of Pennsylvania has not selected an official rock, mineral or gem - so there is no state stone of Pennsylvania.
The address of the Keystone Town Library is: 1101 Madill Street, Keystone, 57751 0689
Keystone is owned by Coors
David Keystone's birth name is Keystone, David Michael.
There is no such position in baseball. The running back position is used in American football.
Keystone auto parts could be found under Keystone Automotive, Keystone Auto Dealers, or Keystone Car Care. It depends upon which one you are looking for.
It is a keystone species
The address of the Keystone Area Historical Scty is: Po Box 459, Keystone, SD 57751
The address of the Keystone Heights Branch Library is: 175 Oriole Street, Keystone Heights, 32656 9339
Keystone Light is owned by Coors