I found a copy of A. A. Milne's The Red House Mystery with this reader review glued to the fly-leaf.
The reviewer responded to the cover quotes (which claimed the book was one of the world's three best mysteries), found "no split infinitives, but...the equally vile misuse of which for that" (thankfully they aren't commenting on my writing), noted some logic and style failings then keyed the review to marginal notations in the text.
He or she definitely would have been a blogger today.
Wish I could see the rest of their library.