It seems there's a complete website devoted to his errors. And I'm not joking.
I realize you're not joking, Bobber..and I was surprised there were so many...but they were pretty much minor mistakes which tells me either Spitz was rushed at the end, or he didn't know many of the inner details of the group that most hardcore fans do...
For instance, you and I know the 64-65-66 American concerts inside and out...Spitz may not have..
On the other hand, the guy spent years interviewing people in Liverpool, many of which had not been interviewed, like Dot Rhone, for instance.