Here is a little video of Charlie saying and signing "book." You have to wait to the very end of the clip (don't worry it's only 30 seconds long). The word "book" comes out sounding like "but," and he always says it several times together "buta-buta-buta." You will see him sign "book" as well.
My hope is to post several clips showing Charlie signing and saying words (not easy!). We are just so pleased with his progress and really credit the Signing Time series for helping Charlie to learn that he can communicate.