In that case, I'd put in a Pocket Ref, chapters 16 (survival) and 18 (first aid) and parts of 15 (knots) from the Ranger Handbook, and a small (3x5 or so) hard bound pocket diary type book with what ever was needed that wasn't there (critical data like credit card numbers that have a dead simple encryption, etc). All in all, not huge- say 3x5x2- and put it in a plastic bag.

There was a mention about fuel oil mixes being written down- I'd put that right on the equipment, even if it means enamel paint and a small brush.