My Books:

For Writers:

Anatomy of Nonfiction: Writing True Stories for Children - With Margery Facklam. Writer's Institute Publications, 2011.

Picture Book Biographies:

Thomas Jefferson Grows a Nation
Illustrated by Stacy Innerst Published by Calkins Creek - new for Fall 2015

For the Birds: The Life of Roger Tory Peterson
Illustrated by Laura Jacques. Published by Calkins Creek, 2011

Farmer George Plants a Nation - Illustrated by Layne Johnson.  Published by Calkins Creek Press, 2008.

Picture Books:

Snow Dance - Illustrated by Paul Facklam and published by Pelican Press, 2008.

Joshua the Giant Frog -  Illustrated by Cat Bowman Smith 
and published by Pelican Pub.

New York: the Empire State - with Margery Facklam.    
Illustrated by Jon Messer and published by Charlesbridge

Mid-grade Nonfiction:

Grace Hopper: computer pioneer - Pearson Pub. 2007
Artificial Intelligence and Bacteria and Viruses -  Both for
the Lucent Library of Science and Technology

The Science of Saving Animals Series
Reptile Rescue
Bird Alert
Marine Mammal Preservation
Big Cat Conservation
for Twenty-first Century Books

Young Adult Nonfiction:

Forensic Anthropology - An expanded and updated edition 
of Talking Bones, Facts On File. 
Medicines From Nature - Twenty-first Century Books

Out of Print Titles:

The Kids' World Almanac of Amazing Facts About 
Numbers, Math and Money - Kid's World Almanac Inc.