His two sons, [[Peter K. Simpson]] and [[Alan Simpson]], like their father, served in the Wyoming House. Alan Simpson served three terms in the U.S. Senate from 1979 to 1997. The sons were strongly in support of civil rights. | His two sons, [[Peter K. Simpson]] and [[Alan Simpson]], like their father, served in the Wyoming House. Alan Simpson served three terms in the U.S. Senate from 1979 to 1997. The sons were strongly in support of civil rights. |