Blakeman, John A. 1978. Buchanan: A Genealogical History, by John A. Blakeman. Quality Printers, Inc., Bristol, Virginia
Blakeman, John A. 1978. Buchanan - The family History of James Buchanan son of Alexander Buchanan of Pennsylvania 1702-1976. Quality Printers, Inc., Bristol, Virginia
This work is still within copyright, and not likely to be available online.
This work is commonly cited by Buchanan researchers, but the title is given variously as shown above.