The Blues in 12 Keys Book I in the Constructing Walking Jazz Bass Lines series is an excellent resource for bass players looking for walking bass tab.
The book cover many aspects of jazz and blues harmony all fully notated ion bass tab and standard notation. There are over 100 variations of walking bass lines written over the jazz blues progression suitable for the beginner to advanced bass guitar player.
The blues in 12 keys outlines the key fundamental areas all the professional players know and use to build their bass lines.