Susan (Mini) Marx lives in Orange, Ca. and has most of Harpo's old props. Billy Marx (the oldest) is an entertainer in his own right and really the only one that went into music. For their whereabouts now-a-days, contact Mel Zerman @ LimeLight Publications in NYC. It's a theatrical publishing house and the publisher of HARPO SPEAKS. He sends the "kids" their royalty checks whenever a new edition of that book is released.