J. Jefferson Farjeon
Joseph Jefferson Farjeon (born 4 June 1883 – died 6 June 1955) was an English crime and mystery novelist, playwright and screenwriter. Brother of Eleanor Farjeon.
| Links | https://en.wikipedia.org/wiki/Joseph_Jefferson_Farjeon |
Contributing Writer 1
 | Detective Fiction Weekly, February 9, 1929 | Pulp Magazine |
Copyright Holder (Original Edition) 1
 | La Casa Dei Sette Cadaveri | Paperback |