Share this Page Helena Coggan 2 Total Resources 1 Books Books by Helena Coggan 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 Helena Coggan The Catalyst by Helena Coggan 4 Resources Add to Reading List Share this Book Images courtesy of publishers, organizations, and sometimes their Twitter handles.