DALLAS (September 30, 2004 07:45 PM EDT) - Democratic Rep. Martin Frost on Thursday offered to refund contributions to an October fund-raiser after canceling the appearance of Peter Yarrow over the folk singer's 1970 child indecency conviction. Yarrow, a member of the group Peter, Paul and Mary, was convicted of "taking indecent liberties" with a 14-year-old girl in 1969. President Carter pardoned him in 1981.Frost said in a statement that "crimes against children are very serious offenses. ... I do not believe it is appropriate for Mr. Yarrow to campaign on my behalf." Frost, who faces Republican Rep. Pete Sessions...