Black Discs Seen Overhead (sources)
- "An Extrordinary Phenomenon," article in Symon's Monthly Meteorological Magazine, XXIII, December 1867, London, England. Pg. 130. Online at: https://books.google.com/books?id=knc8AAAAIAAJ&pg=PA130&dq=%22thames+ditton%22+%22shower+of+fire%22&hl=en&sa=X&ei=xokPVZKEBJPjoAS96YLYDw&ved=0CCQQ6AEwAQ#v=onepage&q=%22thames%20ditton%22%20%22shower%20of%20fire%22&f=false