Share this Page Lauren Mortimer 1 Total Resources 3 Books About the Author 1 Personal Website for Lauren Mortimer Visit the Blog Share Books by Lauren Mortimer 3 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 Lauren Mortimer What Was the First Thanksgiving? by Joan Holub and Lauren Mortimer 8 Resources Add to Reading List Share this Book What Was the Underground Railroad? by Yona Zeldis McDonough and Lauren Mortimer 8 Resources Add to Reading List Share this Book What Was the Boston Tea Party? by Kathleen Krull and Lauren Mortimer 7 Resources Add to Reading List Share this Book Series by Lauren Mortimer1 What Was? What Is? Series Share this Series Images courtesy of publishers, organizations, and sometimes their Twitter handles.