Wikipedia: Boogie-woogie (music)
Wikipedia's page about Boogie-woogie piano-based blues includes a simple bassline notation, brief intro to history and styles, and tons of useful links.
Stichting Boogie Promotions (Holland)
Founded by Martign Schok, Stichting Boogie Promotions promotes and preserves boogie woogie in Holland, and holds the International Boogie Woogie Festival each year.
History-of-Rock: Boogie-Woogie Artists
History-of-Rock.com's Boogie Woogie artists page features a brief intro to the style and its founding players and composers.
Boogie Woogie Press
Read articles about Boogie Woogie and interviews of key players.