“Published to promote a greater understanding of our country’s growth.” This book is stamped, Property of South Fork-Croylo Joliet School District, Cambria Co., IA. This book recounts the history of transportation in the U.S. through WWII. Inside are teaching lesson plans for various grades beginning with primary and proceeding through upper grades. There are history lessons, economics and music. Plenty of black & white photos help to tell the story along with ideas for bulletin boards and a script for a play. The book measures 14 x 10 inches. The shiny paper remains white. The cover is loose on the top half. There is some creasing of the corners. Published by the General Motors company and given to schools. The last date noted in the book is 1948.