This is the famous "22 Panels That Always Work," created by Wally Wood, the superb dramatic and satiric comic book artist. They're a wonderful aid for graphic storytelling, suggesting ways to add drama and variety to comics and individual illustrations.
Higher-resolution scans and more about this piece can be found at the blog of Joel Johnson, the art's owner. Thank you, Joel, for making this available to us all.
These drawings were allegedly created by Wood as a cheat sheet for himself. He didn't need it...
...but sometimes the rest of us do.