Task: Question Generation
Input (English): Passage: Frances died in 1986, and Elsie in 1988. Prints of their photographs of the fairies, along with a few other items including a first edition of Doyle's book The Coming of the Fairies, were sold at auction in London for £21,620 in 1998. That same year, Geoffrey Crawley sold his Cottingley Fairy material to the National Museum of Film, Photography and Television in Bradford (now the National Science and Media Museum), where it is on display. The collection included prints of the photographs, two of the cameras used by the girls, watercolours of fairies painted by Elsie, and a nine-page letter from Elsie admitting to the hoax.
The glass photographic plates were bought for £6,000 by an unnamed buyer at a London auction held in 2001.Frances' daughter, Christine Lynch, appeared in an episode of the television programme Antiques Roadshow in Belfast, broadcast on BBC One in January 2009, with the photographs and one of the cameras given to the girls by Doyle. Christine told the expert, Paul Atterbury, that she believed, as her mother had done, that the fairies in the fifth photograph were genuine. Atterbury estimated the value of the items at between £25,000 and £30,000. The first edition of Frances' memoirs was published a few months later, under the title Reflections on the Cottingley Fairies. The book contains correspondence, sometimes "bitter", between Elsie and Frances. In one letter, dated 1983, Frances wrote:
I hated those photographs from the age of 16 when Mr Gardner presented me with a bunch of flowers and wanted me to sit on the platform [at a Theosophical Society meeting] with him. I realised what I was in for if I did not keep myself hidden.
The 1997 films FairyTale: A True Story and Photographing Fairies were inspired by the events surrounding the Cottingley Fairies. The photographs were parodied in a 1994 book written by Terry Jones and Brian Froud, Lady Cottington's Pressed Fairy Book.In 2017 a further two fairy photographs were presented as evidence that the girls' parents were part of the conspiracy. Dating from 1917 and 1918, both photographs are poorly executed copies of two of the original fairy photographs. One was published in 1918 in The Sphere newspaper, which was before the originals had been seen by anyone outside the girls' immediate family.
Output (English): What are the names of the two individuals whose photographic prints of fairies were sold at auction in London for £21,620 in 1998?