Agent
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- Macmillan
- Houghton Mifflin Company
- DK Publishing
- Dark Horse Books
- WordSong, an imprint of Highlights
- L.C. Page & Co.
- Gazelle Drake Academic distributor
- Kidhaven Press
- Garrard Pub. Co.
- Distributed by Chicago Review Press
- Albert Whitman and Company
- Groundwood Books
- Stonehenge in association with the American Museum of Natural History
- Maple Tree Press
- Hearst Books
- Facts On File
- Silver Burdett Co.
- Rock the Boat, an imprint of Oneworld Publications
- Random House
- Farrar, Straus, & Giroux
- Harcourt Children's Books
- RP Kids
- C. N. Potter : distributed by Crown Publishers
- Learner Publications
- Hastings House
- Troll Associates
- Dempsey Parr
- Peachtree Publishers
- Farrar, Straus, and Giroux
- Lerner Publications Company
- Peter Bedrick Books
- Lodestar Books
- Rowman & Littlefield
- Scholastic Inc.
- Dell Laurel-Leaf Books
- Bobbs-Merrill
- Graphix / Scholastic
- Simon Pulse/Mercury Ink
- Dell Yearling
- Amulet Books, an imprint of Abrams
- HC
- Roaring Brook Press
- Workman Pub.
- Checkerboard Library, an imprint of Abdo Publishing
- Rebel Girls, Inc.
- Scott, Foresman
- Scholastic Press
- Anchor Books, a Division of Random House, Inc.
- JIMMY Patterson Books, Little, Brown and Company
- Disney Hyperion Books