In 1848, nine-year-old Joshua Martin McCullough writes a journal of his family's journey from Missouri to Oregon in a covered wagon. Includes a historical note about westward migration. Interest Level: 3-6 Reading Level: 3.5 ATOS Book Level: 3.1 AR Interest Level: MG AR Points: 1 AR Quiz: 50170EN Reading Counts Level: 3.1 Reading Counts Points: 5 Lexile Measure: 320 Guided Reading Level: O.