The Officer and the Dancers (sources)
- PRIMARY SOURCE: "Ghoulish time in the fog for Hull Pc.," article in the Hull Daily Mail, newspaper of Hull, England, Wednesday, August 10, 1977. Pg. 4, co. 2. Online in the Newspapers.com website [pay site]: https://www.newspapers.com/image/898333547/?terms=stonebridge%20maypole&match=1
- "A ghostly story...," article in the Hull Daily Mail, newspaper of Hull, England, Saturday, August 2, 1997. Pg. 33. Online in the Newspapers.com website [pay site]: https://www.newspapers.com/image/900091494/?terms=stonebridge%20%22david%20swift%22&match=1
- "INTCAT 1977 July-December," page in the INTCAT (International Catalogue of Entity Reports) website, viewed 6-5-2016. Online at: http://intcat.blogspot.com/2012/11/intcat-1977-july-december.html
- Fairies: Real Encounters with Little People, by Janet Bord, 1997 New York, New York, USA. Pgs. 53-54. ISBN: 0-440-22612-0. Online at: https://books.google.com/books?id=ch3dAgAAQBAJ&pg=PT45&dq=%22if+invisibility+were+not+enough,+further+concealment+may+be+achieved%22&hl=en&sa=X&ei=eVJBVYKMEMbloAT-2oGYCA&ved=0CB4Q6AEwAA#v=onepage&q=%22about%20thirty%20years%20ago%22&f=false