My grandfather and grandmother. Probably taken in Abingdon or Lebanon, Va. "Doctor" is a given name.
This is likely a Herndon or a Herndon relative from Russell or more likely Washington County, Va. It was found in a small purple display book with an outside clasp, and contained a number of tintypes and other paper photos. One contained the name of the Abingdon, Va. photographer G.N. Wertz. Two others were taken by C.R. Campbell, Lebanon, Va. One of the photos was actually a small postcard with the notice "Copyright 1911 by The Chicago Feddottypr Co. On the inside of the book cover was written "In God we trust. 10-1-6"