Black Past
Black Past: Ailey, Alvin
This brief encyclopedia entry tells about Alvin Ailey, influential black dancer and choreographer. There is a link to a website that takes you to his theater's page.
Library of Congress
Loc: The Nature of Dance
This site from the Library of Congress provides sketches of costume designs used at the premiere of choreographer Lester Hortons "Le Sacre du Printemps", original dance work.