resource on immigrants to Midwest

For anyone researching family in the midwest, the following link is for a book that can be downloaded or read online in its entirety. There is a chapter on Koshkonong Prairie (pgs 142-157), and other communities like Ephraim and Door County with large Norwegian immigrant populations. It will require patience and a dictionary to read for non-native speakers as it is written in old script. (if this book was previously cited, sorry for the repeat!) Norwegian settlement history (in Norwegian)