- Keystone
Keystone may refer to:
*
Keystone (architecture) , the piece at the apex of an arch or vault
* TheKeystone effect , caused by projecting an image onto a surface at an angle, or by photography at an angle
*Keystone correction for these types of distortionBusiness
*
Keystone Aircraft Corporation, an early manufacturer of airplanes
*Keystone (beer brand) , a beer from Coors Brewing Company
*Keystone Camera Company
*Keystone View Company , a US photo agency founded in 1892
*Keystone (1899 automobile) , a steam car from Lebanon, Pennsylvania
*Keystone (1914 automobile) , an automobile from PittsburghEntertainment
*
Keystone (video game) , an Xbox Live Arcade casino gambling game
*Keystone Cops , a series of silent movies
*Keystone Kapers , a classic Atari game wherein a police officer pursues a thief
*Keystone Studios , movie studioPlaces
;United States
* The "Keystone State", nickname for the U.S. Commonwealth ofPennsylvania , in use by 1802
*Keystone, Colorado , a town
**Keystone Resort , the related ski resort
*Keystone, Florida , an unincorporated community
*Keystone, Indiana
*Keystone, Iowa
*Keystone, Montana
*Keystone, Nebraska
*Keystone, South Dakota , a town near Mount Rushmore
*Keystone at the Crossing , a business/shopping district located in Indianapolis, Indiana
**The Fashion Mall at Keystone , a mall located in the Keystone shopping district
*Keystone Heights, Florida , a small city;Fictional
*Keystone City , home of the comic book character the FlashRailroads
*
Keystone Service (Amtrak) , Amtrak's current New York-Harrisburg
*Keystone (Amtrak) , Amtrak's former New York-Pittsburgh service
* Keystone (PRR),Pennsylvania Railroad 's former New York-Washington servicechools
*
Keystone School , a private K-12 school in San Antonio, Texas
*Keystone National High School , a private correspondence schoolOther uses
*
Keystone (cask) , a wooden or plastic fitting used in ale casks
*Keystone module , a type of data connector mounted in walls and patch panels
*Keystone species , species that have a larger effect on their environment than is purely due to their abundance
*Operation Keystone during World War II
* The Keystone asterism inHercules (constellation)
*Keystone (limestone) , a type of limestone quarried in the Florida Keys
* The "keystone" variety of slottedscrewdriver blade
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