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He was the president of the Dallas Petroleum Engineers Club and a director of Florida Gas Company, Clark Oil and Refining, Whitehall Corporation, Transco Energy, and the Consolidated Development Corporation.<ref name=spartacus/> In 1965, he wrote another book, ''The Dynamic Natural Gas Industry,'' published by the [[University of Oklahoma]] Press in Norman,  [[Oklahoma]].<ref>Crichton, p. 79.</ref>

He was the president of the Dallas Petroleum Engineers Club and a director of Florida Gas Company, Clark Oil and Refining, Whitehall Corporation, Transco Energy, and the Consolidated Development Corporation.<ref name=spartacus/> In 1965, he wrote another book, ''The Dynamic Natural Gas Industry,'' published by the [[University of Oklahoma]] Press in Norman,  [[Oklahoma]].<ref>Crichton, p. 79.</ref>

Crichton died in Dallas of complications from [[cancer]] at the age of ninety-one. Crichton and his wife, the former Marilyn Berry (1927-2010), a native of [[Kansas]].<ref>{{cite web|url=https://www.ancestry.com/search/?name=Marilyn+Berry_Crichton&event=_dallas-dallas-texas-usa_76758|title=Marilyn Berry Crichton|publisher=Ancestry.com|accessdate=September 4, 2019}}</ref> The couple had two daughters, Catherine C. Morris (born 1955) and husband Craig Allen Morris (born 1954) and Anne C. Crews (born 1953) and husband Kyle W. Crews (born 1955). Anne was formerly an assistant press secretary in the first administration from 1979 to 1983 of [[Bill Clements]], the first Republican governor of Texas since [[Reconstruction]]. Crichton also had a surviving sister, Frances "Dinks" Atkinson (1913-2015) of Shreveport, and two grandchildren, one of whom, John Crichton Morris, is named for his grandfather.<ref name=tamu/>​

Crichton died in Dallas of complications from [[cancer]] at the age of ninety-one. Crichton and his wife, the former Marilyn Berry (1927–2010), a native of [[Kansas]].<ref>{{cite web|url=https://www.ancestry.com/search/?name=Marilyn+Berry_Crichton&event=_dallas-dallas-texas-usa_76758|title=Marilyn Berry Crichton|publisher=Ancestry.com|accessdate=September 4, 2019}}</ref> The couple had two daughters, Catherine C. Morris (born 1955) and husband Craig Allen Morris (born 1954) and Anne C. Crews (born 1953) and husband Kyle W. Crews (born 1955). Anne was formerly an assistant press secretary in the first administration from 1979 to 1983 of [[Bill Clements]], the first Republican governor of Texas since [[Reconstruction]]. Crichton also had a surviving sister, Frances "Dinks" Atkinson (1913–2015) of Shreveport, and two grandchildren, one of whom, John Crichton Morris, is named for his grandfather.<ref name=tamu/>​

In his short memoir, Crichton describes his political legacy:​

In his short memoir, Crichton describes his political legacy:​