"Contains full text for nearly 140 popular, middle school magazines. All full text articles are assigned a reading level indicator (Lexiles). Full text is also available for thousands of biographies, historical essays and student pamphlets. Additionally, Middle Search Plus contains primary source documents including Essential documents in American History, reference books including the Funk & Wagnalls New World Encyclopedia and American Heritage Dictionary, 4th edition from Houghton Mifflin, the Encyclopedia of Animals, and an Image Collection of 202,164 photos, maps and flags. Middle Search Plus also includes the Our States reference book series from Great Neck Publishing"-- "About the Database" from the Help screen.