I am afraid that with regards to SCHOFFEN or KLINGAMAN surnames I can be of no help.Neither of them have even a slight connection at this point to my current expanding family lines.
I can give you more information about the book in a week or so because I managed to track one down on the internet by searching out some Used Book Stores and it should be arriving in a couple of days or so. The name of it is Jacob Schoff and His Decendants by Wilfred H. Schoff, published in 1910. Jacob Schoff was from Germany. Searching for Schoff and Decendants with your browser should bring you to a good site by Cole Schoff that has some connections and history.Hope you find it helpful. Happy Searching. Faye