Hi all,
I am currently in the process of getting 578 squadrons WWII record books and photographs digitised.
I am going to make backups as suggested and also distribute copies to others.
However I am also looking at archive institutions. You could start at your local library. Most Cities have their own archives. Just a thought. That way they should be preserved in a sympathetic way.
You might find some of the information here useful: http://en.wikipedia.org/wiki/Digital_preservation