Colleen, Have you visited the GenWeb Site for Williamson and looked to see if any of your "names" are listed in the 'Pioneer Families"?
Have you contacted the Williamson County Genealogical Society to see if they can help you find a copy of the book or perhaps check to see if any of the "names" appear in the book?http://home.flash.net/~hmwalden/wcgs.htmhttp://home.flash.net/~hmwalden/wcgs.htm
The book is copywrite material and you are probably on shaky ground asking for somebody to copy "pages".I presume California (that is where you live isn't it?) has some major libraries that can borrow the book for your use within the library.
Working with the 'locals' in Williamson County you will find very rewarding both from the standpoint of gathering information but more importantly, developing new friends who are also interested in Williamson County and it's history.If you haven't visited their Web Site (para 1) you missed the opportunity to learn quite a lot about the county.I really do suggest that as your starting point.