I'm surprised that no one has answered you yet.I just saw your message for the first time today. I haven't visited the forums in quite a while.
To answer your question, "The Dadismans of America A Family History" is sold only at the Dadisman Family Reunion. The reunion is held the first Saturday of every August in WV.
You can contact the Taylor County, WV Historical Society in Grafton, WV.There is a Dadisman descendant there and he can give you more details about exactly where the reunion will be held next August. My copy was purchased in August of 2000, I think for $25.00 at that time.
You can contact Historical Society Members at the "Anna Jarvis Birthplace Museum", Rt. 2 Box 352, Grafton, WV 26354, phone (304) 265-5549. There is information about the museum at this link, http://www.rootsweb.com/~wvtaylor/brthplce.htmhttp://www.rootsweb.com/~wvtaylor/brthplce.htm