[1] Some of the roles he performed with the NYCO were Baron Popoff in The Merry Widow, Hauk-Sendorf in The Makropoulos Case, Ko-Ko in The Mikado, the Magician in The Consul, both Prince Orlofsky and the jailor Frosch in Die Fledermaus, Truffaldino in The Love for Three Oranges, and Wazir in Kismet among others.
In 1950 he appeared in several productions at the Chicago Railroad Fair, including performing the roles of Ko-Ko and Baron Popoff.
He also sang important roles in WGN Radio broadcasts of The Mikado, Iolanthe, Die Fledermaus, and A Night in Venice.
His final stage appearance was in January 1994 as Abraham Kaplan in Kurt Weill's Street Scene at the Houston Grand Opera, just seven months before his death from lung cancer in Manhattan at the age of 74.
[2] During the 1960s and 1970s Harrold taught singing and was director of the opera theatre program at the University of Oklahoma in Norman.