Count Basie
William "Count" Basie is often thought of as a bandleader first, and a piano player second, if at all. Yet, his laid-back contributions to the jazz piano canon demonstrate that his influence is wide and deep.
Duke Ellington
Link to the Duke Ellington Appreciation Society, which supports continued appreciation of Ellington's music via concerts, lectures, publications, and more.
Fats Waller
A brief biography of the King of Stride Piano, as well as a list of midi files of Waller's most popular songs that can be purchased.
James P. Johsnson BluesTone Piano Rolls
Piano rolls recorded by James P. Johnson available for sale. Many are extremely rare, but all offer great insight into the way his music would have been played during the period when it was written.
Jazz Music for Piano
List of jazz songs, song collections, and fake books for the jazz pianist.
Learn Jazz Piano
Some good information and tips here absolutely free from Scott Ranney. Points users to some other good resources as well.
Lil Hardin-Armstrong
Lil Hardin was one of the first and few women to rise to prominence in traditional jazz. A pianist with Joe "King" Oliver's band and later wife of Louis Armstrong, Hardin also wrote some standard tunes and led her own band.
Piano Jazz MIDI page
A large number of MIDI files of classic jazz piano tunes are available here.
Piano Place: Jazz
Music and music collections for the jazz pianist, including jazz progressions, playing bebop, chord voicings, and more.
Red Hot Jazz Piano Rolls
You can find many piano rolls here that were transcribed from performances by some of the greatest jazz piano pioneers.