Mark C. Carnes 
Historical Atlas of the United States [PDF ebook] 

Designed for all libraries, this large-format, full-color atlas is an authoritative guide to the history of the United States. From the formation of the continent up through current events and information based on the most recent census, this work uses the geography of the United States to portray the history of the land and its people. The 300-plus maps tell the engaging story of America with detailed, clear information; accompanying text highlights key information presented in each map.
An indispensable tool for students and educators alike, the Historical Atlas of the United States is destined to become a classic in the field.