Lawrence Martin 
Physical Geography of Wisconsin [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. This discussion of the physical geography of Wisconsin is an attempt to describe the surface features of the state in such a way that any man or woman may read and understand, that any gram mar school teacher may read and select items for verbal presenta tion to her pupils, and particularly that any high school, normal school, or college instructor may read and assign to students for reading either the whole book, or the chapters dealing with the home region.