Here is a short list for some suggest listening.
It's all available from Document Records, one of the premier, world-class Blues record labels today.

Piano Blues, the essential DOUBLE CD
Cripple Clarence Lofton Vol 1 1935 - 1939
Cripple Clarence Lofton Vol 2 1939 - 1943
Georgia Tom Vol 1 1928 - 1930
Georgia Tom Vol 2 1930 - 1934
Will Ezell 1927 - 1931
Little Brother Montgomery - Vocal Accompaniments & Early Post-War Recordings 1930 - 1954
Lucille Bogan Vol 3 1934 – 1935 (Walter Roland, piano)
The Boogie Woogie Boys 1938-1939
Roosevelt Sykes Vol 8 1945 - 1947
Roosevelt Sykes Vol 9 1947 - 1951

Roosevelt Sykes Vol 10 1951 - 1957
Big Maceo, Vol.1: 'Flying Boogie' (1941 – 1945)
Big Maceo, Vol.2 1945-1950