I've got a set of exactly what you're looking for. They're credit card sized plastic. I found them 15 years ago at Waldenbooks (chain store, might be regional). They've since been removed from the kits I can reach right now due to space limits. IIRC they are all text with few if any pictures. I'll see if I can find them while I'm home over Thanksgiving.
I can't seem to find anything related to 'first aid books' and 'waldenbooks'. It just keeps taking me to amazon.
I'll look there for something like this (wish I thought of that sooner).
Thanks,
kris