Book manufacturing error. What to do about a book with pages uncut/unseparated at the bottom?

I have a book that has rough cut pages on two edges (side and bottom).
The tops of the pages are smoothly/uniformly cut. The real dilemma
is a manufacturing error at the bottom of the pages. Nearly every
other set of adjoining pages have never been separated/cut apart, so
you can't pull them apart to read them.

The really sad part is that this book is the extremely rare Mandate
For Change signed by Dwight Eisenhower in perfect condition with
original glassine DJ. Only the slipcase is showing any signs of wear.
He only signed 1400 of these for Doubleday back in 1963.

Who could I take this to in order to have the bottom of the pages
cut/separated?