I agree. Type out everything you know about the history of the rifle in your family...if you can find out out the rank and the unit of your great greatdad, his address at the time, you can add that later. We may yet learn where he purchased it, either from your family or from my research into retail records. Anyway, type everything you know and save a hardcopy, with the idea that this goes with the rifle whenever you sell it or pass it on. This rifle may still be shooting for another hundred years, and guys on the gun forums in 2110 shouldn't have to puzzle over it!