The information presented in this book is valuable, and it is an easy and short read. There are not a lot of books on the German-Russians so I would recommend this book.
However, it reads like a rough draft that needs some further research and expansion. The author seems unsure of his facts. For example on page 94: "It is probably", "As far as I can determine", "They appear to be", "It may have been possible", etc.
I know the author is from North Dakota, but there needs to be better balance. One single paragraph mentions German-Russian settlement in Kansas and Nebraska while 22 pages chronicle the German-Russian settelemnt of the Dakotas.
There also needs to be much more about what happened to the German-Russians (the majority) who did not emigrate to the Americas. The Epilogue was not enough to cover that topic.
A good book that needs an expanded, better-researched second edition.