America on the Move

This site from The Smithsonian Institution uses “three interconnected routes to explore how transportation shaped our lives, landscapes, culture, and communities.” Features an illustrated and annotated timeline, an “online transportation collection [that] includes more than a thousand artifacts and photographs” (browsable by categories, eras, and regions), and a thematic tour of the collection. Also includes games and materials for classroom use.

Source: http://americanhistory.si.edu/onthemove/