George Herbert Walker's great-grandson graduated from where in 1968?
George Herbert Walker: George Herbert "Bert" Walker Sr. (June 11, 1875 – June 24, 1953) was an American banker and businessman and the maternal grandfather of President George H. W. Bush and a great-grandfather of President George W. Bush. George W. Bush:  After graduating from Yale University in 1968 and Harvard Business School in 1975, he worked in the oil industry.
Yale University