sentences:  He edited the tournament books for those two events, which were written by Alexander Alekhine.Helms also organized and promoted national chess tours for top players such as Capablanca, Alekhine, Lasker, Géza Maróczy, and Frank Marshall.Helms was formally recognized in 1943 by the United States Chess Federation as the 'Dean of American Chess', and held this designation until his death at age 93 in 1963.