There is "Baumann/Bowman Family of the Mohawk, Susquehanna; & Niagara Rivers by Maryly Barton Penrose, last published in 1977 by Liberty Bell Associates. Unfortunately it is long out of print. If you need to know what families are mentioned in this book, I have a photocopy of the complete index. I have been able to get a few pages photocopied through ILL. As you can probably tell from my surname, this book is about my line. I sure wish that I could buy this book, either new or used. I believe Maryly wrote several books about this area of New York. Regards, Charles Bowman, Jr. El Paso, TX