*Need to sort out works between:*
1. Martin Greenberg, b. 1918, fl. 1955, sci-fi editor
2. Martin Harry Greenberg, b. March 1, 1941, http://viaf.org/viaf/108898602/ fl. 1970s-2000s, sci-fi & detective author and anthologist
3. Martin Greenberg, b. 1918 Feb 3, poet. http://viaf.org/viaf/107027625/