Wonderful Garage Sale find

Be still my heart! Vintage ledgers!! I recently stopped at a garage sale on the way home, to look at vanity that was way over priced. Out of the corner of my eye I saw a box of old office supplies-phones, fax, tape dispensers etc. I looked inside to see if maybe there was a old stapler and on the bottom of the box was these!! It was hard to hide my excitement!! The grumpy old may who took my money said "these are not good for anything but coloring books now" I just smiled at him, gave him the money and quickly went to my car to do a little happy dance. Some of them still have the records in them dated in the early 80's. So here's your warning--lots of projects to come with these.
I was also thinking about packaging up some sheets to sale. Leave me a comment if you think you might be interested in owning some sheets of your own. And what size? I was thinking 6x6, which would make it easy and affordable for mailing.