Off the top of my head (I'm not at home at the mo to be able to check my bookshelves), here's a few:
Inside The Wicker Man by Alan Brown
Evil Dead Companion by Bill Warren
Crystal Lake Memories : The History of Friday 13th by Peter Bracke
See No Evil : Banned Films & Video Controversy by David Kerekes & David Slater
The Satanic Screen by Nikolas Schreck
Bad Blood : Illustrated Guide to Psycho Cinema by Christian Fuchs
Texas Chainsaw Massacre Companion by Stefan Jaworzyn
Beyond Horror Holocaust: A Deeper Shade of Red
Shock Horror: Astounding Artwork from the Video Nasty Era
Both are fantastic reads about the whole Horror/Video Nasty genre & well worth the asking price.
I've read both cover to cover & have helped make my DVDpacific wishlist span about 3 solid pages of horror movies
Another vote for Easy Riders/Raging Bulls. It's been re-released lately in a cheap paperback format and I've seen it in Waterstones for 2.99. Whilst not quite within the remit, 'The Jaws Log' by Carl Gottlieb and 'Truffaut and Me' by Bob Balaban are worth a read.
How about "Rebels on the backlot"? It covers the newer directors and there signature films. QT (pulp fiction), David Fincher (fight club), David O. Russel (three kings), PTA (boogie nights), Steven Sodeerbergh (traffic), Spike Jonze (being john malkovich). Well worth a read imo.