[1][2] In all, there were 170 stories and, according to noted fantasy bibliographer Mike Ashley, exactly 100 of these came from the legendary American pulp Weird Tales.
Mike Ashley has written: "although anthologies have perhaps earned a reputation greater than they deserve, they were nevertheless a landmark series in the history of horror short fiction".
[1] She was married to the editor and author Oscar Cook, who also appeared in Weird Tales, most notably with "Si Urag of the Tail".
A number of her stories that appeared in the Not at Night series as written by Flavia Richardson were also reprinted in various other anthologies by editors such as Charles Birkin, Mary Danby, and Herbert van Thal.
An occultist, and friend of Dion Fortune, she was a member of the Society of the Inner Light and wrote her two non-fiction occult titles, The Western Mystery Tradition (1968) and A Case For Reincarnation (1972) as Christine Hartley, using her the surname of her second husband, whom she had married in 1945.
[3] Campbell would later publish her autobiography I Am A Literary Agent (Sampson Low, 1951) Christine died, aged 88, on 29 September 1985.