Murray Newton Rothbard (; March 2, 1926 - January 7, 1995) was an American heterodox economist of the Austrian School, a historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern right-libertarianism. Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement.

In 1953, in New York City, he married JoAnn Schumacher (1928-1999), whom he called Joey. JoAnn was his editor and a close adviser, as well as hostess of his "Rothbard Salon". They enjoyed a loving marriage, and Rothbard often called her "the indispensable framework" behind his life and achievements. According to Joey, patronage from the Volker Fund allowed Rothbard to work from home as a freelance theorist and pundit for the first fifteen years of their marriage. The Fund collapsed in 1962, leading Rothbard to seek employment from various New York academic institutions. He was offered a part-time position teaching economics to the engineering students of Brooklyn Polytechnic Institute in 1966, at age 40. This institution had no economics department or economics majors, and Rothbard derided its social science department as "Marxist." However, Justin Raimondo writes that Rothbard liked his role with Brooklyn Polytechnic because working only two days a week gave him freedom to contribute to developments in libertarian politics.  Rothbard continued in this role for twenty years, until 1986. Then 60 years old, Rothbard left Brooklyn Polytechnic Institute for the Lee Business School at the University of Nevada, Las Vegas, where he held the title of S.J. Hall Distinguished Professor of Economics, an endowed chair paid for by a libertarian businessman. According to Rothbard's friend, colleague and fellow Misesian economist Hans-Hermann Hoppe, Rothbard led a "fringe existence" in academia, but was able to attract a large number of "students and disciples" through his writings, thereby becoming "the creator and one of the principal agents of the contemporary libertarian movement." Rothbard maintained his position at UNLV from 1986 until his death. Rothbard founded the Center for Libertarian Studies in 1976 and the Journal of Libertarian Studies in 1977. In 1982, he co-founded the Ludwig von Mises Institute in Auburn, Alabama, and was vice president of academic affairs until 1995. The Institute's Review of Austrian Economics, a heterodox economics journal later renamed the Quarterly Journal of Austrian Economics, was also founded by Rothbard in 1987.  After Rothbard's death, Joey reflected on Rothbard's happiness and bright spirit. "...he managed to make a living for 40 years without having to get up before noon. This was important to him." She recalled how Rothbard would begin every day with a phone conversation with his colleague Llewellyn Rockwell. "Gales of laughter would shake the house or apartment, as they checked in with each other. Murray thought it was the best possible way to start a day." Rothbard was irreligious and agnostic toward the existence of God, describing himself as a "mixture of an agnostic and a Reform Jew." Despite identifying as an agnostic and an atheist, Rothbard was critical of the "left-libertarian hostility to religion". In Rothbard's later years, many of his friends anticipated that he would convert to Catholicism, but he never did. The New York Times obituary called Rothbard "an economist and social philosopher who fiercely defended individual freedom against government intervention."

Using a quote from the above article, answer the following question: Did he retire?
Rothbard maintained his position at UNLV from 1986 until his death.