New York State Archives, NYSA_A3045_255
Men playing basketball at an outdoor gymnasium on Hester and Essex Streets in New York City, circa 1900.
Jennings, Peter, Jennifer Armstrong, Todd Brewster, and Katherine Bourbeau. The Century for Young People. Bantam Doubleday Dell Books for Young Readers, September 1999. ISBN: 0385327080
DK Publishing. Children's History of the 20th Century. DK Publishing, Inc., August 1999. ISBN: 0789447223
McGovern, Ann. If You Lived 100 Years Ago. Scholastic, Inc., August 1999. ISBN: 0590960016