The Art of Piano Fingering: Traditional, Advanced, and Innovative by Rami Bar-Niv (2013) is a great book. It focuses on classical piano, but I think that his book is useful for any keyboardist, including a rock or jazz pianist, an organist or a synthesist, which is what I am. He covers some wild techniques, like "mashes", clusters and even the karate chop! He does not specifically cover the minor pentatonic scales but the general principles he describes are useful for any scale. He covers chords and of course, the advanced classical repertoire as well as a little about jazz.
The minor pentatonic scales
are covered in
Pentatonic Scales for the Jazz-Rock Keyboardist by Jeff Burns (Publ. Hal•Leonard, 1997) and there are some videos on YouTube which cover the minor pentatonic scales, for example
https://www.youtube.com/playlist?list=PLECB1BE67E895EC94 by Brent Henderson.
In his book, Rami Bar-Niv relates that the composer Hector Berlioz believed that musicians should devise their own fingerings rather than rely on what others say. If I'm working from written music which has some suggested fingerings, I'll give them a try, but frequently the suggested fingerings just don't work for me, because my hands are weird, and sometimes I'm messing with the pitch bend wheel.
I find it interesting that Johann Sebastian Bach left almost no suggested fingerings in most of his works, only in a few pedagogical pieces like the "Applicatio in C Major" (from the
Wilhelm Friedemann ClavierBüchlein.) I also find it interesting that in the
Essay on the True Art of Playing Keyboard Instruments, written by his son, C. P. E. Bach, several fingerings are given for the different scales suggesting the importance of being flexible and adapting your fingering to the circumstances.
But yeah, +1, I'd like to see some suggested fingerings!