For what it's worth - we have a similar binder at the fire company, one in each truck - but we're 97% done converting it to a stand-alone "hyper-document" (web site) that allows us to:

a) Keep the whole darn book in the form of a CD-ROM (the current book is in a 4" binder! it's HUGE!)
b) Concurrently issue updates to all copies
c) Embed multi-media in the book

Once that's done, we're going to try to get a grant or donations to buy laptops for each truck, or at least some of them.