Contributor Bio:Rustad, Martha Elizabeth Hillman
Martha E. H. Rustad is the author of more than one hundred nonfiction children's books, on topics ranging from baby ducks to black holes to ancient Babylon. She lives with her family in Brainerd, Minnesota.

Contributor Bio:Schuh, Mari C
Mari Schuh is the author of more than 150 nonfiction children's books, covering topics from tomatoes to tornadoes. She has written numerous articles for daily newspapers and has presented at the West Virginia Book Festival. Mari lives in Wisconsin with her husband, Joe, and their house rabbit, Kindle.