Marguerite Henry. She was my favorite children's author when I was young. I loved her books about real horses, and I think I owned nearly all of them. Favorites were King of the Wind, Mustang, and Justin Morgan Had a Horse. I even had the Breyer horse sculptures done after her horse characters. It rocked.
Beverly Cleary. Ramona Quimby was my hero.
Georgette Heyer. Oh, Georgette.
Judy Blume (I'm really amazed that I read so many of her books, considering that I never really enjoyed most of them, especially the ones directed at teens. I really did not get teen lit when I was a teen. I suspect this has to do with that whole being 8 years behind everybody else thing, haha.)
whoever the original writer of The Babysitter's Club was. Shut up. I was 12.
Do plays count? If they do, then I get to add:
I wonder if there's somebody else really obvious that I'm forgetting. Oh, yeah--Dr. Seuss. :)
Gah. Writing is hard. *harangues*