Keystone

Keystone or key-stone or variation, 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

Business

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
Keystone View Company, a US photo agency
Keystone (Berkeley, California), a defunct music club

Entertainment

Keystone (video game), part of the Xbox Live Arcade title Fable 2 Pub Games
Keystone (band), led by jazz trumpeter Dave Douglas
- 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

United States

The "Keystone State", nickname for the U.S. Commonwealth of Pennsylvania
Keystone, Imperial County, California
Keystone, Colorado, a town
- Keystone Resort, the related ski resort
Keystone, Florida, an unincorporated community
Keystone, Indiana
Keystone, Iowa
Keystone, Nebraska
Keystone, North Dakota
Keystone, Ohio
Keystone, South Dakota, a town near Mount Rushmore
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

Canada

The "Keystone Province", a 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"

Railroads

Keystone Corridor, a rail corridor from Philadelphia to Pittsburgh
Keystone Service, a current New York-Harrisburg service
- Keystone (Amtrak train, 1979-1981), a predecessor of the current service
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), a lightweight train used for the service

Schools

Keystone School, a private K-12 school in San Antonio, Texas, USA
Keystone National High School, a private correspondence school
Keystone Exam, a Pennsylvania standardized test

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

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