There's a 4-star review of Erik Davis' Zeppelin book in the May issue of Blender, by Steve Kandell.
"While the books in Continuum's long-running 33 1/3 series generally cast classic albums in a personal, anecdotal light, this volume deconstructs cock-rock's most inscrutable magnum opus as a collision of music and magick. Though Jimmy Page's Aleister Crowley fixation has been well-documented, Davis makes the case that every aspect of the record, from the lyrics to the packaging, is rooted in Satanic mysticism. A helpful reminder to haters who dismiss the record as Dungeons and Dragons pabulum that worshipping the devil is pretty cool."
The same issue also carries a nice guide to the Joy Division / New Order catalogue, by Live at the Apollo author Douglas Wolk. I would have given Low-Life four stars rather than Douglas' three, but otherwise no quibbles.