I have an index for the Rietbrock Centennial Book - 1880-1980. It was indexed by Carol Berans - with much appreciation from me.
Township of Rietbrock, Marathon County, Wisconsin
Romy has kindly volunteered to help me with references to this book. He has a copy of the index. If you e-mail him with the names you are interested in, he will let you know if the names appear in the book, and what the reference is. Please e-mail him - [email protected]