World Digital Library: United States History: Map

A collection of primary source materials linked to a map that explore a wide scope of events in the history of the United States from 1492 on. Click on any numbered circle and a popup appears showing one or more thumbnails and where the material is located. Click on a thumbnail to go to a page with descriptive information about it. Each description has an audio feature for listening to the text. Under each image or document, there is also a download link.