Did sir Henry cotton make golf clubs?

yes i have a set at home No Henry Cotton did not make Golf clubs, He played George Nicoll clubs throughout his career and endorsed clubs, in the same way Tiger Woods endorses Nike clothing etc.. The clubs that you have, the heads were probably made by George Nicoll, if they have the "hand" trademark to the side of Henry Cotton's signature. His sponsorship arrangements may have been different in the USA, and other firms may have added shafts to the heads and made them their own.