'John Hyatt developed celluloid as a substitute for ivory in the balls used in this game'
pool (or billiards or snooker)
IVORY: John Hyatt developed celluloid as a substitute for ivory in the balls used in this game
John Hyatt developed celluloid as a substitute for ivory in the balls used in this game
John Hyatt developed celluloid as a substitute for ivory in the balls used in this game
IVORY
pool or billiards or snooker
IVORY