Ella Schwartz is the author of several books for young readers, including Her Name Was Mary Katharine: The Story of the Only Woman Whose Name Appears on the Declaration of Independence , Can You Crack This Code? , Stolen Science , and Is it Okay to Pee in the Ocean? In addition to writing books, Ella is a cyber security warrior interfacing with the U.S. federal government on strategic technology initiatives. She has a bachelor's and master's degree in engineering from Columbia University. ellabooks.comGaby D'Alessandro is a Dominican illustrator based in Brooklyn. She attended Altos de Chavón in the Dominican Republic and moved to New York to complete her degree in Illustration at Parsons School of Design. Her work has appeared in many publications and projects for clients such as The New York Times, The Library of Congress, The Botanical Garden of Padua, and New York City's MTA.