Sadly, I do not have the book - I am sure it would be fascinating. Here is some more info on the early Stu....
As a 23-year-old clerk in ICI’s shipping department, he used the office phone to summon Jagger and Richards to auditions in Soho in 1961 and persuaded Charlie Watts and Bill Wyman to give up better paid engagements to join the outfit. It was, Richards says, “Stu’s band”.
Long before Andrew Loog Oldham took over their management, Stewart understood that the sexual magnetism of Jagger, Richards and Brian Jones needed to be stabilised by a rhythm team made up of older and more experienced men who could hit a groove and not let it go.
His knowledge of blues and jazz were at the core of the group’s early repertoire as he taught the callow youngsters about the work of such giants as Meade Lux Lewis, Leroy Carr and Scrapper Blackwell. “When those names came out of Stu’s mouth,” Richards says, “it was poetry.” He could put his passion to good use, too. “When he was playing,” Jagger notes, “the band always swung a lot harder.”
For Stewart, and for others in the Thames delta of the early 1960s, the music was a passion and a calling, imposing its own rules and restraints. Jeff Beck, a younger member of the circle, called him “Mr Blues” and says: “He actually made you feel guilty about thinking about liking any other kind of music.”
Furthermore, as the late 50's pic shows he had his sharp side. “He should have been lead singer of the Stones,” posits Jack Bruce, “and playing the banjo, I mean what could have been hipper than that?”
The highest accolade comes from Keith Richards foreword. “The Rolling Stones are Ian Stewart's band. He was the first one there at the beginning,” states Keith. “As far as I am concerned Stu's still here.”
Another, later picture, of Stu with MJ -