I found this meme at The Library of Babel, who in turn found it at The Little Professor. Which authors have you read ten or more books by?

L.M. Montgomery (she's the winning author on our bookshelves for number of books we own by one person--it's something like 25)
Charles de Lint (he's in 2nd or 3rd, vying with James Branch Cabell)
Louisa May Alcott
C.S. Lewis
Agatha Christie
Ellis Peters/Edith Pargeter
Charles Dickens
Jane Austen (if you count absolutely everything she wrote, including juvenilia and letters, I think that's somewhere around ten)
Plato
Ruth Rendell
Tamora Pierce
Robin Hobb/Megan Lindholm
Maud Hart Lovelace
Beverly Cleary
Patricia Wrede
Elizabeth Peters
Patricia McKillip
Roald Dahl
E. Nesbit
Laura Ingalls Wilder
William Shakespeare
Madeleine L'Engle
Gladys Taber
A.S. Byatt
Robin McKinley
Elizabeth George
Edgar Rice Burroughs
Marguerite Henry
Walter Farley
Connie Willis
P.G. Wodehouse

That's all I can come up with for now, though I'm not including the various authors of Nancy Drew, the Hardy Boys, etc. It's not as long a list as I would've expected, but of course, there are the authors who I would read ten books by if they'd written that many (yeah, Brontes, I'm talkin' to you).