This folder contains letters from both before and after the death of Increase Allen Lapham. Many of the letters discuss the Wisconsin Geological Survey. Prior to his death, Increase Allen Lapham was i…

This folder contains field notes, maps, illustrations, photographs, newspaper clippings and letters relating to the Effigy Mounds of Wisconsin, largely created and compiled by Increase Allen Lapham.

This folder contains field notes, letters, maps, and drawings regarding the location and prehistoric artifacts found in various Effigy Mounds in the State of Wisconsin.

This folder contains letters, maps, and diagrams primarily concerning archaeology and excavation of Effigy Mound in Wisconsin and the artifacts they contained. Other documents in this folder include:…

This folder contains a hard bound handwritten copy of the book entitled, Minnesota and Dacotah or the Red River of the North; With an Account of the Rich and Fertile Country Along its Banks in Minneso…

This folder contains the manuscript copy of Increase Allen Lapham's book entitled "Geographical and Topographical Description of Wisconsin, 1844." This copy is made up of handwritten pages, notes, and…

This folder mostly contains mostly professional correspondence written and received by Increase Allen Lapham in 1864. The correspondence covers a range of Lapham's interests and pursuits including arc…

This folder contains both personal and professional correspondences of Increase A. Lapham (1811-1875) for the years 1860 through 1865, divided into chapters 10 through 15 of a rough draft biography. A…