Marisa C. Weiss, M.D., is a physician who specializes in taking care of women with breast cancer. She is founder and president of the nonprofit educational organization Living Beyond Breast Cancer, which promotes the health of all women affected by breast cancer with conferences, workshops, newsletters, and a help line. Dr. Weiss works and lives in the Philadelphia area with her husband and three children.

Ellen Weiss has served as editorial consultant to Living Beyond Breast Cancer since its founding. She is also the author of The Secondhand Supershopper. This is the first professional collaboration she has had with any of her six children. She and her husband live in the Philadelphia area.

ELLEN WEISS has written hundreds of books for kids of all ages. She's collaborated on dozens of books with Mel Friedman, including The Tiny Parents, The Adventures of Ratman, The Curse of the Calico Cat, and The Poof Point.