Use your scrapbooking to lay down the ground work for genealogy enthusiasts. Include who told you what. And should you never be able to locate that document, whoever takes up your mantle may be able to do so and without having to start from scratch.
I think I may start digging through all the Bug's research and using that as a basis for some scrapbooking pages to make into a book.
Template from Ideas for Scrapbookers;