By Anonymous 411
A cheat sheet or quick reference card can be useful for looking up a bit of information that you have forgotten. Beats hunting up the reference book or old text book, if you still have one. Not recommended as your sole source of information on the subject.
The websites listed below does not include all suppliers of these items, but more to show you such resources are available.
Over 4000 FREE cheat sheets, as downloadable PDF files, on a variety of subjects. Below are three links. I downloaded all the cheat sheets from the Healthcare and Medical. There are more subjects on the website. There are a few interesting prepper related items included.
Has the largest and most comprehensive collect to laminated quick reference guides. They have many more categories on the website.
Laminated reference guides. Over 550 different guide products. PDF Catalog
Weather measuring equipment and software and a few interesting laminated quick reference cards.