内容简介：
The 19th Century American Inventors series focuses on six inventors whose inventions have changed the way we live. From the telephone to the third rail to the cotton gin, each invention and the creative genius behind it are profiled. Vintage photos, drawings from the inventor's private journals, and easy-to-read text make these books compelling reads for reluctant readers. This series is a wonderful addition to the social studies curriculum. It explores the impact of each inventor's technological discoveries on American society.