The ‘Historical Atlas of North America’ compiles notable events which have affected North America across its history into a large collection of maps, ranging from 1832 to 2014. This atlas maps America’s history from its very foundation to its growth into the superpower it is today in a very unique and easy to access way.
And the best thing is, its available online for free: http://omniatlas.com/maps/northamerica/18321012/