Editing Keystone

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'''Keystone''' or '''key-stone''' may refer to:
* [[Keystone (architecture)]], a central stone or other piece at the apex of an arch or vault
* [[Keystone (cask)]], a fitting used in ale casks
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==Companies==
* [[Keystone Law]], a full-service law firm
* [[Digital Keystone]], a developer of digital entertainment software
* [[Keystone Aircraft]] Corporation
* [[Keystone Bridge Company]], an American bridge building company
* [[Keystone (beer brand)]]
* [[Keystone Camera Company]]
* [[Keystone (gasoline automobile)]]
* [[Keystone (steam automobile)]]
* [[Keystone Pipeline]], a crude oil pipeline
* [[Swiss Telegraphic Agency|Keystone-SDA/Keystone-ATS]], a Swiss press agency
* [[Keystone View Company]], a US photo agency
* [[Keystone (Berkeley, California)]], a defunct music club

==Education==
* [[Keystone Academy]], a private K–12 school in Shunyi, Beijing, China
* [[Keystone College]], a private college in Pennsylvania, United States
* [[Keystone Exam]], a standardized test at public schools in Pennsylvania, United States
* [[Keystone School]], a private K–12 school in San Antonio, Texas, United States
* [[Keystone School Online]], a private for-profit online K–12 school based in Herndon, Virginia, United States
* Keystone, an education program at the U.S. [[National Defense University (Washington, D.C.)|National Defense University]]

==Entertainment==
* [[Keystone (video game)|''Keystone'' (video game)]], part of the Xbox Live Arcade title ''Fable 2 Pub Games''
* [[Keystone (band)]], led by jazz trumpeter [[Dave Douglas (trumpeter)|Dave Douglas]]
** [[Keystone (album)|''Keystone'' (album)]], a 2005 album by the band
* [[Keystone Cops]], a silent movie series
* ''[[Keystone Kapers]]'', a classic Atari game
* [[Keystone Studios]], a movie studio

==Places==
* The Keystone asterism in the [[Hercules (constellation)|Hercules constellation]]

===United States===
* The "Keystone State", nickname for the U.S. Commonwealth of [[Pennsylvania]]
* [[Keystone, Colorado]], a town
** [[Keystone Resort]], the related ski resort
* [[Keystone, Florida]], an unincorporated community
* [[Keystone, Indiana]]
* [[Keystone, Iowa]]
* [[Keystone, Missouri]]
* [[Keystone, Nebraska]]
* [[Keystone, North Dakota]]
* [[Keystone, Ohio]]
* [[Keystone, South Dakota]], a town near Mount Rushmore
* [[Keystone, West Virginia]]
* [[Keystone, Wyoming]]
* [[Keystone at the Crossing]], a business/shopping district in Indianapolis, Indiana
** [[The Fashion Mall at Keystone]], located in the Keystone shopping district
* [[Keystone Heights, Florida]]
* [[Keystone Canyon]], Alaska
* [[Keystone Lake]], a resort area near Tulsa, Oklahoma
* [[Keystone, Wisconsin]]

===Canada===
* The "Keystone Province", a [[List of provincial and territorial nicknames in Canada#Manitoba|nickname for the Province of Manitoba]]
** [[Keystone Centre]], an arena and exhibition centre in Brandon, Manitoba

===Fictional locations===
* [[Keystone City]], home of the comic book character The Flash
* Keystone City, a holographic city in the ''Star Trek: The Next Generation'' episode "[[Emergence (Star Trek: The Next Generation)|Emergence]]"

==Railroads==
* [[Keystone Corridor]], a rail corridor from Philadelphia to Pittsburgh
* ''[[Keystone Service]]'', a current New York-Harrisburg service
**[[Keystone (Amtrak train, 1979-1981)|''Keystone'' (Amtrak train, 1979–1981)]], a predecessor of the current service
* [[Keystone (Amtrak train, 1971-1972)|''Keystone'' (Amtrak train, 1971–1972)]], a former New York-Pittsburgh service operated by Amtrak
* ''Keystone'', a former New York-Washington service operated by the [[Pennsylvania Railroad]]
** [[Keystone (train)|''Keystone'' (train)]], a lightweight train used for the service

==Sports==
* [[Keystone Junior Hockey League]], in Manitoba
* [[Keystone Cup]], Western Canadian Junior "B" ice hockey championship
* [[Keystone (horse)]], a racehorse

==Other uses==
* [[Keystone (limestone)]], quarried in the Florida Keys
* [[Keystone effect]], caused by projecting an image onto a surface at an angle, or by photography at an angle
* [[Keystone Initiative]], a medical protocol to reduce infection rates
* [[Keystone module]], a type of data connector mounted in walls and patch panels
* [[Keystone Press Awards]]
* [[Keystone species]], species that have a larger effect on their environment than is purely due to their abundance
* [[Operation Keystone]], during World War II
* Keystone, a variety of [[screwdriver]] blade
* "Keystone", a descriptive reference to the [[Book of Mormon]]
*''The Keystone'', journal of the [[Pennsylvania Railroad Technical and Historical Society]]
*''The Keystone'', Pennsylvania news website owned by [[Courier Newsroom]]

==See also==
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* [[Stone (disambiguation)]]
* [[Key (disambiguation)]]
* ''[[The Stone Key]]'' (2008 novel) post-apocalyptic novel by Isobelle Carmody
* [[Stone Key Partners]] (bank) U.S. boutique investment bank

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