The 14th annual Library of Congress National Book Festival, held on August 30 at the Walter E. Washington Convention Center in Washington, D.C., drew an estimated crowd of 150,000 book-lovers, including hordes of children's and YA book fans. Here we present a selection of photos of authors and illustrators who spoke, presented, autographed, and mingled with fans.

Brian Lies presents from behind an enormous copy of his book, Bats in the Band (HMH). Photo: Maria Simon

Raina Telgemeier, whose new graphic novel Sisters (Scholastic/Graphix) is a sequel to her autobiographical Smile, answers fans’ questions after her presentation.

Molly Idle (Flora and the Penguin, Chronicle) demonstrates how to draw a flamingo on the Picture Book Stage. Photo: Erik Weibel

Jack Gantos and a young fan of the Joey Pigza series, at Gantos’s signing.

Judith Viorst talks about her two new titles: Alexander, Who’s Trying His Best to Be the Best Boy Ever (Atheneum) and And Two Boys Booed (FSG).

Jacqueline Woodson signing her new memoir for young readers, Brown Girl Dreaming (Penguin/Paulsen).

Scholastic authors (from l.): Patrik Henry Bass (author of The Zero Degree Zombie Zone), Tanuja Desai Hidier (Bombay Blues), Jeffrey Brown (Star Wars: Jedi Academy: Return of the Padawan), Raina Telgemeier (Sisters), and Jerry Craft (illustrator of The Zero Degree Zombie Zone).

Gene Luen Yang gave a well-received speech on diversity at the 2014 National Book Festival gala.