The Medford Public Library is co-sponsoring an online program with historical fiction author Madeline Martin. Martin is a New York Times, USA Today, Publisher’s Weekly, and internationally bestselling author of historical fiction and historical romance with books that have been translated into over 25 different languages. Her 2023 book, “The Keeper of Hidden Books,” is heartwarming story about the power of books to bring us together, inspired by the true story of the underground library in WWII Warsaw. Martin also wrote “The Last Bookshop in London,” “The Librarian Spy.” and “The Booklovers’ Library.” Register through the library’s online calendar to receive the Zoom link.