I used to make up note-pads from scrap paper or light card, method similar to that for perfect-bound books (but without the end-papers or covers). Just used whatever glue was available in the office-supplies cupboard, usually rubber solution (trade-marked in UK as "Cow Gum"), vegetable glue which seems to have disappeared, or PVA-type white glue.
May be worth the effort to save your Bob Copper book, but copies are cheaply available UK side on eBay or Amazon (post to USA may make me a liar!) but a quick look reminded me of several other Bob Copper books that ought to be worth investigating.
If mildew is actually at the dusty stage replacement may be the better option. Good luck with the project!
Ross