Ancient Monuments of the Mississippi Valley - The Expanded Edition Volume TwoRecent archive discoveries of many of the original draft surveys and field notes of Ephraim George Squier and Edwin Hamilton Davis (and others) reveal previously unseen details of many of the earthwork sites depicted in Ancient Monuments of the Mississippi Valley (1848), as well as material that was edited out of the original publication. This new multi volume Expanded Edition created for the 175th anniversary of its 1848 publication date, includes a