Dublin, Ireland: Mrs John F. Kennedy, accompanied by her host, Irish Premier Jack Lynch, studies the form of the runners in the Irish Derby at the Curragh here today, July 1. The race was won by Ribocco and Jockey Lester Piggot. Ribocco is owned by Mr G.W. Engelhard of New Jersey, U.S.A. Mrs Kennedy and her two children are currently on holiday in Ireland. 1 July 1967