Book Challenges: Who’s Who?

Dan Kleinman Pointed to Lisa Chellman’s post Book Challenges: Who’s Who?. She’s listed what she calls the the “major players” , listed in alphabetical order. It’s a suprisingly short list, she must be missing someone.
Lisa: “I don’t believe that any subset of the population should be allowed to dictate what the rest of the population may or may not read, or limit access to those materials, no matter how good its intentions—but below I’m going to stick to the facts.”