Even though “Sarah & Katy and the Book of Blank” won’t officially be for sale until Tuesday, Nov. 24, there will be a pre-release book party at Prairie Creek Public Library in Dwight, Ill., on Saturday, Nov. 21.

And you’re invited!

The public is welcome to attend the book launch party. Copies of the new book, as well as copies of “Sarah & Katy and the Imagination Blankets,” will be for sale. (Book of Blank will be $10 per copy; Imagination Blankets will be on sale for $5 per copy.)

In addition to getting first-edition copies and reading the new book before it hits store shelves, those who attend will have a chance to enter their names in a raffle for a Sarah & Katy-themed gift basket. (And did I mention there will be cake?)

Mark the date on your calendars — I hope to see you there!