Sarah Prager is a writer, activist, and speaker on LGBTQ+ history. Her widely praised first book on the subject, Queer, There, and Everywhere: 23 People Who Changed the World, received numerous accolades, including three starred reviews and being named a Best Book for Teens by the New York Public Library and Chicago Public Library. Her second book, Rainbow Revolutionaries: 50 LGBTQ+ People Who Made History, is for ages 8-12. Prager's writing has appeared in The Atlantic, HuffPost, and many other publications. She has presented on this topic to over 130 groups across five countries, including the U.S. Embassy in Mexico City. Prager also created Quist, a free mobile app for learning LGBTQ+ history, in 2013 and was invited to the White House to contribute on LGBTQ+ tech issues in 2014. Prager lives with her wife and their children in Massachusetts.