Three Rivers Business College... Griswold & Clark, Three Rivers, Michigan / Novelty Multiplication Chart ... patent 1906.

Waterstained, worn, see scans 22115 304-87

I usually ship same or next day, everything goes with tracking, shipped in a sturdy stay-flat mailer.

If you buy more than one lot in my sale, I will reduce the shipping total, but please wait for me to send the combined shipping invoice before you pay.