PERRITANO, John . The Lewis and Clark Expedition . ISBN 978-0-531-20582-2 ; ISBN 978-0-531-21245-9 . LC 2009014183. PERRITANO, John . The Transcontinental Railroad . ISBN 978-0-531-20585-3 ; ISBN 978-0-531-21248-6 . LC 2009014185. ea vol: 48p. (A True Bk.Westward Expansion Series). illus. maps. photos. reprods. chron. further reading. glossary. index. Web sites. CIP. Children's Press . Mar. 2010. PLB $26; pap. $6.95. Gr 3-5 These books provide elementary readers with clear explanations, maps, illustrations, time lines, and engaging reproductions of primary resources. Each volume contains eye-catching quick facts; illustrations and photographs are representational of regional Native Americans, pioneers, and explorers. This is ideal material for reports on the Westward expansion. Revised from the 2006 "True Book" series, these updated editions take on a more interactive approach, adding sidebars and lively graphics just right for today's millennium readers. Melissa Smith, Green Valley Library, Henderson, NV