GBF BLOG Gaithersburg Book Festival Announces High School Short Story Contest Finalists Top Authors and Illustrators to Lead Free Workshops for Children Printable 2018 GBF flyer By Jud Ashman | Published April 12, 2018 We’re all so excited for the big show on May 19th! If you’d like printable 2018 GBF flyers to post anywhere and everywhere, just click here, download, and print.