My grandfather wrote an autobiografy, it describes his life from a day to day basis. It's a terrible read, full of insignificant details (like what he paid for parking). But it also portrays how he experienced important world events like 9/11.
I think the book will be very valuable for later generations, because I have the feeling we only remember the lives of the most important poeple. I live in the Netherlands (if that's relevant), I can't ask my grandfather if/how he wants it to be preserved because he is diagnosed with dementia.
Sorry for my English, I'm not a native speaker. Thanks in advance!
Printed media last a lot longer than digital media. So if you were thinking about digitalising it, you could, but it won’t aid in the preservation. We still have papyrus from the egyptian times so paper can last. Store it in a dark and dry environment and in an archival box of acid free cardboard and it should be fine. I guess you could vacuum seal it? But you might want to flip through it every now and then.
The Internet Archive's Open Library accepts submissions to their project.
Is there a local historical society for the city where your grandfather lived?