Here's a few encapsulations from very recent reviews of The Strawberry Bricks Guide to Progressive Rock, Revised and Expanded Edition (2017):
“In this updated edition of his 2007 book, an idea of the kind of depth Charles Snider goes into can be gleaned from the revised artwork, an electron-microscope image of the grooves of Minstrel In The Gallery. It’s a heck of a project, and his dedication and breadth of choice is to be applauded. Snider’s summaries are intensely fact-packed but academic – this is still an enthusiast’s mothership.”