The Persistent Pistol (sources)

• PRIMARY SOURCE: "Coincidences," by Harold Nicolson, essay in Small Talk, 1938. Online at [snippet view]: https://books.google.com/books/about/Small_talk.html?id=ryFbAAAAMAAJ
• "Bismarck," post in the jgstephan Blogspot website, posted 11-3-2005, viewed 3-28-2016. Online at: http://jgstephan.blogspot.com/2005/11/bismarck.html
• "Bismarck Museum Friedrichsruh," page in the Wikipedia website [German, translated to English], viewed 3-28-2016. Online at: https://translate.google.com/translate?hl=en&sl=de&u=https://de.wikipedia.org/wiki/Bismarck-Museum_Friedrichsruh&prev=search
• Bismarck's Table-Talk, edited by Charles Lowe, 1895 London, England. Pgs. 242-243. Online at: https://books.google.com/books?id=tlbPUb1tdd8C&pg=PA242&lpg=PA242&dq=%22blind%27s+revolver%22&source=bl&ots=aVGldjB6HS&sig=4sweJ1kqU7jYRRk159_mCJVJJh0&hl=en&sa=X&ved=0ahUKEwj1iOLmlOLLAhUBF2MKHXxLCP8Q6AEIHDAA#v=onepage&q=%22blind%27s%20revolver%22&f=false
• "Echoes of the Week," article in The Illustrated London News, No. 1817, Vol. LXVI, Saturday, January 2, 1875. Pg. 7, col. 2. Online at: https://books.google.com/books?id=j8xlAAAAcAAJ&pg=PA7&lpg=PA7&dq=%22blind%27s+revolver%22&source=bl&ots=ufBlvkHMvo&sig=3nv7PVToZaMaYnEUxHKbv_-PCpo&hl=en&sa=X&ved=0ahUKEwj1iOLmlOLLAhUBF2MKHXxLCP8Q6AEILzAF#v=onepage&q=%22blind%27s%20revolver%22&f=false
• Le comte de Bismarck: sa biographie & sa politique, by Alfred Michiels, 1871 Bruselles, Belgium. Pgs. 70-71. Online at: https://books.google.com/books?id=wtBWAAAAMAAJ&pg=PA71&dq=bismarck+%22cohen-blind%22&hl=en&sa=X&ved=0ahUKEwjOz_HVjtvLAhUP-2MKHeawCCU4ChDoAQgpMAI#v=onepage&q=bismarck%20%22cohen-blind%22&f=false
• "Ferdinand Cohen-Blind," page in the Wikipedia website, viewed 3-24-2016. Online at: https://en.wikipedia.org/wiki/Ferdinand_Cohen-Blind
• "Harold Nicolson," page in the Wikipedia website, viewed 3-27-2016. Online at: https://en.wikipedia.org/wiki/Harold_Nicolson
• The Life of Prince Bismarck, by William Jacks, 1899 Glasgow, Scotland. Pg. 208. Online at: https://books.google.com/books?id=AplCAAAAIAAJ&pg=PA208&dq=bismarck+%22cohen-blind%22&hl=en&sa=X&ved=0ahUKEwi75ObCjtvLAhUUHGMKHX7GBwwQ6AEIHDAA#v=onepage&q=bismarck%20%22cohen-blind%22&f=false
• "Otto von Bismarck," page in the Wikipedia website, viewed 3-24-2016. Online at: https://en.wikipedia.org/wiki/Otto_von_Bismarck

Mentions & Repeaters (of the legend):

• Miracles, by Charles Raymond Dillon, 2000 Authors Choice Press. Online at: https://books.google.com/books?id=AMKMMpogkysC&pg=PA42&lpg=PA42&dq=bismarck+%22cohen-blind%22+revolver+1906&source=bl&ots=kQwXKTBT-V&sig=PduJIBmiGJMo5D3aNn3-l_r4dWU&hl=en&sa=X&ved=0ahUKEwi695nwk9vLAhVV7mMKHZkODVwQ6AEINDAD#v=onepage&q=bismarck%20%22cohen-blind%22%20revolver%201906&f=false
• Mysteries of the Unexplained, 1982 Reader's Digest Association, USA. Fifth printing, February 1985. ISBN: 0-89577-146-2. Pg. 71-72.