The Iron Gem

First published in Ellery Queen's Mystery Magazine, July 1974 as 'A Chip of the Black Stone'.

Date	Publication	Publisher	Type	Page
October 1976	More Tales of the Black Widowers	Doubleday	Collection	30
April 1977	More Tales of the Black Widowers	Gollancz	Collection
November 1977	More Tales of the Black Widowers	Fawcett Crest	Collection	45
July 1978	黒後家蜘蛛の会2	東京創元社	Collection	\|4
1980	More Tales of the Black Widowers	Granada	Collection
December 1983	More Tales of the Black Widowers	Fawcett Crest / Ballantine	Collection	45
September 1985	More Tales of the Black Widowers	Fawcett Crest / Ballantine	Collection	45
1988	Opnieuw de zwarte weduwnaars	Het Spectrum	Collection	37
December 2003	The Return of the Black Widowers	Carroll & Graf	Collection	71
November 2005	The Return of the Black Widowers	Carroll & Graf	Collection	71
May 2007	Le club des veufs noirs	Flammarion	Collection	91
March 2015	A table, gentlemen !	Bibliomnibus	Collection	50

Notes