Question: When was the University founded whose athletics team has a mascot Pistol Pete ?

Context paragraphs:
Oklahoma State Cowboys and Cowgirls: Oklahoma State Cowboys and Cowgirls are the athletic teams that represent Oklahoma State University.  The program's mascot is a cowboy named Pistol Pete.  Oklahoma State participates at the National Collegiate Athletic Association (NCAA)'s Division I Football Bowl Subdivision (FBS) as a member of the Big 12 Conference.  The university's current athletic director is Mike Holder.  In total, Oklahoma State has 51 NCAA team national titles, which ranks fourth in most NCAA team national championships.  These national titles have come in wrestling (34), golf (10), basketball (2), baseball (1), and cross country (4).  The 1945 Oklahoma A&M football team was retroactively awarded a national title in October 2016 by the American Football Coaches Association.

New Mexico State Aggies: New Mexico State University's teams are called the Aggies, a nickname derived from the university's agricultural beginnings.  The mascot is known as "Pistol Pete".  NMSU's colors are crimson and white.  The Aggies compete in the Western Athletic Conference in all men's and women's sports except football, in which the Aggies are a member of the Sun Belt Conference.  The athletic director is Mario Moccia, who has held the position since January 2015.

Vitold Kreyer: Vitold Anatolievich Kreyer (Russian: Витольд Анатольевич Креер , born 12 October 1932) is a retired Russian triple jumper.  He competed in the 1956, 1960 and 1964 Olympics and won bronze medals in 1956 and 1960.  He won the Soviet title in 1960 and 1961 but failed to reach the finals at the 1958 and 1962 European Championships.  In retirement he coached triple jumpers, including the three-time Olympic champion Viktor Saneyev.  He was head coach of the Soviet athletics team in 1967–80, and headed the Russian athletics team at the 2000 Olympics.

Pistol Pete: The Life and Times of Pete Maravich: Pistol Pete: The Life and Times of Pete Maravich is an Emmy Award-winning documentary of "Pistol" Pete Maravich.  It first aired on CBS during the Final Four Tournament on April 1, 2001.  It was produced by George Roy, written by Steven Stern, and narrated by Harry Connick, Jr. It is considered the most comprehensive documentary about Maravich ever produced.  It notched a 6.8 rating and a 12 share.

Pistol Pete (New Mexico State University): Pistol Pete is the mascot for the New Mexico State Aggies, the athletic teams of New Mexico State University in Las Cruces, New Mexico, USA.  Pistol Pete is portrayed by a NMSU student dressed in traditional cowboy attire, including a cowboy hat, a vest, and chaps, and armed with twirling pistols.  NMSU licenses Pistol Pete from Oklahoma State University for $10/year as part of a settlement of a copyright infringement lawsuit.

Pistol Pete (Oklahoma State University): 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.

Oklahoma State University–Stillwater: 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.

Anteater Recreation Center: The Anteater Recreation Center (ARC) is an 89000 sqft indoor gym facility that is part of campus recreation at the University of California, Irvine (UCI); the anteater is the mascot of the UC Irvine athletics team (see University of California, Irvine#Athletics for the mascot's origin and history).  It is open to all UCI students, faculty and staff members, alumni, and other university affiliates, including spouses.

Philippines national athletics team: The Philippines national athletics team represents the Philippines at the international athletics competitions such as Olympic Games or World Athletics Championships.  Philippine Athletics Track and Field Association (PATAFA) is the governing body of athletics in the Philippines.

Pete (Disney): Pete (also called Peg-Leg Pete, Pistol Pete and Black Pete, among other names) is an anthropomorphic cartoon character created in 1925 by Walt Disney and Ub Iwerks.  He is a character of The Walt Disney Company and often appears as a nemesis and the main antagonist in Mickey Mouse universe stories.  He was originally an anthropomorphic bear but with the advent of Mickey Mouse in 1928, he was defined as a cat.  Pete is the oldest continuing Disney character, having debuted three years before Mickey Mouse in the cartoon "Alice Solves the Puzzle" (1925).

Supporting paragraphs: Oklahoma State Cowboys and Cowgirls Oklahoma State University–Stillwater
Answer: 1890