IMDb
Im Db: Harold Nicholas
This site has brief biographical information about Harold Nicholas, the legendary tap dancer with brother Fayard Nicholas.
Other
Eperformer.com: The Gallery
Brief description of the Cotton Club, includes photographs of advertisements from the Club. The Nicholas Brothers are featured, click image to enlarge.
Other
Young Hollywood Hall of Fame: Young Entertainers of the 1940s
Photographs of young actors and entertainers from the 1940s, including the Nicholas Brothers.