HVBlogger has just learned of some interesting new additions to the more than 60 children's book authors and illustrators who will be taking part in Celebrate Children's Book Day at Washington Irving's Sunnyside on Sunday, Sept. 28.

Joining an already impressive roster of expected attendees will be Brian Selznick. He is the author/illustrator of The Invention of Hugo Cabret, for which he won the prestigious Caldecott Medal for 2008.

The Caldecott is awarded annually by the Association for Library Service to Children to the artist of the most distinguished American picture book for children published that year. It was named in honor of nineteenth-century English illustrator Randolph Caldecott. Together with the Newbery Medal, it is the most prestigious American children's book award.

Two other late-breaking additions to Book Day are Howard Whitehouse, author of The Island of Mad Scientists, and Maria Carluccio, author/illustrator of The Sounds Around Town. Both will be participating in the event for the first time.

It's definitely going to be a can't-miss event for children's book fans.