Mouse mummies, fossil-digging, and more! Albert is excited to explore the mouseum. But when his friend Leo's little cousin goes missing, tracking her down takes the mice on a whole new adventure. (Math concept: Left/Right)

Eleanor May is the author of many books for Kane Press, including several titles in the Mouse Math and Math Matters series. She also writes under the pen names Nan Walker and Lewis B. Montgomery. She lives with her family in eastern Pennsylvania. Deborah Melmon has been a freelance illustrator in the San Francisco Bay area for over 30 years. Among her many picture books are Picnic at Camp Shalom, Speak Up, Tommy, One Good Deed, and Chicken Soup, Chicken, Soup. Deborah lives with a comical Airedale Terrier named Mack.