Question: When was the American politician and Governor of Oklahoma died in the city which is is home to the main campus of Oklahoma State University?

Context articles: Floyd Gass
Oklahoma State University–Oklahoma City
Bennett Memorial Chapel
Pistol Pete (Oklahoma State University)
James E. Berry
Stillwater, Oklahoma
Oklahoma State University System
Old Central
Oklahoma State University–Stillwater
Oklahoma State University–Tulsa

Floyd Gass (January 31, 1927 – March 3, 2006) was an American football and basketball player, coach, and college athletics administrator.
 He served as the head football coach at Austin College from 1961 to 1968, having previously been offensive coordinator, and at Oklahoma State University–Stillwater from 1969 to 1971, compiling a career college football record of 56–46–2.
 He was voted the Big Eight Conference Coach of the Year in 1969.
 His record was 13–18–1 in his three seasons at Oklahoma State.
 Gass was also the head basketball coach at Austin College from 1955 to 1962, tallying a mark of 71–80, and served as athletic director.
 He was an alumnus of Oklahoma State, and played football and basketball while attending the university.
 Gass was one of three head football coaches at Oklahoma State to have played for Oklahoma State, along with Jim Lookabaugh and current head coach Mike Gundy.
 Gass served as athletics director at OSU from 1971 through 1978, when he left OSU to pursue other business opportunities.
 Gass died on March 3, 2006, at the age of 79.
Oklahoma State University–Oklahoma City (abbreviated OSU-OKC) is a coeducational public university located in Oklahoma City, Oklahoma.
 Originally a branch of Oklahoma State University–Stillwater beginning in 1961, its name changed from Oklahoma State University Technical Institute to its current designation in 1990.
 It is part of the Oklahoma State University System.
 The school offers more than 40 degrees and/or certificates.
 Traditional semester classes are held weekdays and weeknights, with three-week session classes available on the weekends.
The Bennett Memorial Chapel is a building on the campus of Oklahoma State University located in Stillwater, Oklahoma.
 The interdenominational chapel serves as a memorial to honor students from Oklahoma A&M College (now Oklahoma State University), who were killed during World War I and World War II and to honor Henry G. Bennett, president of Oklahoma A&M College, and his wife Vera, who died in a plane crash in Iran in 1951.
Pistol Pete is the athletics mascot of Oklahoma State University.
 In the past, New Mexico State University and the University of Wyoming have both used mascots based on the original Oklahoma State "Pistol Pete" caricature artwork; however both schools have subsequently revised their Pistol Pete mascots so that they no longer resemble Oklahoma State's Pistol Pete.
 The Pistol Pete mascot costume features traditional cowboy attire and a headpiece resembling Frank Eaton.
 Pistol Pete has been the mascot for the Oklahoma State Cowboys since 1923.
James Edward Berry (October 2, 1881, near Oak Grove, Jackson County, Missouri – November 22, 1966, Stillwater, Oklahoma) was an American politician who served as the Lieutenant Governor of Oklahoma from 1935 to 1955.
Stillwater is a city in north east Oklahoma at the intersection of US-177 and State Highway 51.
 It is the county seat of Payne County, Oklahoma, United States.
 As of 2012, the city population was estimated to be 46,560, making it the tenth largest city in Oklahoma.
 Stillwater is the principal city of the Stillwater Micropolitan Statistical Area which had a population of 78,399 according to the 2012 census estimate.
 Stillwater was part of the first Oklahoma Land Run held April 22, 1889, when the Unassigned Lands were opened for settlement and became the core of the new Oklahoma Territory.
 The city charter was adopted on August 24 later that year.
 Stillwater is home to the main campus of Oklahoma State University, as well as a branch of Northern Oklahoma College, Meridian Technology Center, and the Oklahoma Department of Career and Technology Education.
The Oklahoma State University System is a university system comprising six educational institutes across Oklahoma: four general academic universities and two health institutions.
 Its flagship institute is the Oklahoma State University–Stillwater.
 The Oklahoma State University System has a total enrollment of about 35,073 students and is the largest university in the state of Oklahoma.
 It is governed by the Oklahoma Agricultural and Mechanical Colleges Board of Regents in Oklahoma City, Oklahoma.
 The System also has Agricultural Experiment Stations throughout Oklahoma and Cooperative Extension offices that serve all 77 counties.
 V. Burns Hargis currently serves as CEO of the Oklahoma State University System, in addition to his service as president of OSU-Stillwater.
Old Central is the oldest building on the Oklahoma State University campus in Stillwater, Oklahoma.
 Originally built in 1894, it was the first permanent building on the Oklahoma A&M campus.
 Old Central's bell clapper once served as a traveling trophy in the Bedlam Series athletics rivalry between Oklahoma State University and the University of Oklahoma.
 The new "Bedlam Bell" is a crystal trophy modeled after Old Central's bell and is awarded to the winner of each individual athletics contest in addition to the overall series winner for each year.
Oklahoma State University (also referred to informally as Oklahoma State, OKState, and OSU), is a land-grant, sun-grant, coeducational public research university located in Stillwater, Oklahoma, United States.
 OSU was founded in 1890 under the Morrill Act.
 Originally known as Oklahoma Agricultural and Mechanical College (Oklahoma A&M), it is the flagship institution of the Oklahoma State University System.
 Official enrollment for the fall 2010 semester system-wide was 35,073, with 23,459 students enrolled at OSU-Stillwater.
 Enrollment shows the Freshman class of 2012 was the largest on record with 4,298 students.
 OSU is classified by the Carnegie Foundation as a research university with high research activity.
Oklahoma State University–Tulsa, located in Tulsa, Oklahoma, United States, is the newest institution of the Oklahoma State University System.
 It was previously the University Center at Tulsa until it became OSU-Tulsa on January 1, 1999.
 OSU-Tulsa is unique in the fact that it is not recognized as its own entity, but rather an extension of the main Oklahoma State University campus in Stillwater, Oklahoma.
 OSU-Tulsa works in conjunction with the main OSU campus and Tulsa Community College to provide Freshman and Sophomore level courses, enabling students to complete a four-year undergraduate course of study.
 Howard Barnett, Jr. has served as President of OSU-Tulsa since 2009.