Share this Page Amy Sky Koster 2 Total Resources 1 Total Book Awards 1 Books Author Interviews 1 Interview with Amy Sky Koster Created by Creative Company View on Creative Company Share Books by Amy Sky Koster 1 Sort by Number of Resources Number of Awards Book Title Year Published Word Count Reading Level: ATOS® Reading Level: Lexile® Add Multiple Titles to Reading List Browse books by Amy Sky Koster Egg by Amy Sky Koster and Lisel Jane Ashlock 5 Resources1 Award Add to Reading List Share this Book Images courtesy of publishers, organizations, and sometimes their Twitter handles.