Patricia Valdez is a scientist who loves writing for children. She earned her Ph.D. in Molecular and Cell Biology from the University of California, Berkeley and currently works at the National Institutes of Health. Originally from Texas, she now lives in the Washington, D.C. area.

Sara Palacios was the recipient of the 2012 Pura Belpré Illustrator Honor Award for her work on Marisol McDonald Doesn't Match. A native of Mexico, Sara graduated from the National Institute of Fine Arts in Mexico City and went on to earn BFA and MFA degrees in illustration from the Academy of Art University in San Francisco. She illustrates for companies in both the United States and Mexico.