I’m up having read through my 10-cent pile of The Books of Magic series that I picked up last month. I have a good chunk from 1 to 30 something and a sprinkling of later ones (up to 63), so I was looking online to fill in the blanks. Unfortunately, there’s not much online, there’s a mailing list and a site called Abracadabra which seems to be the most comprehensive and up to date… er, excepting that most of the old content was apparently lost.