Martin Harry Greenberg (March 1, 1941 - June 25, 2011) was an American academic and speculative fiction anthologist. In all, he compiled 1,298 anthologies. He founded Tekno Books, a packager of more than 2000 published books; he was also a co-founder of the Sci-Fi Channel. Some of his anthologies included: Past Imperfect (2001), Once Upon a Galaxy (2002) and Sirius: The Dog Star (2004).
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