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The Envelope

Isaac Asimov

First published January 1990
Type Short Fiction
Length Short Story
Series Black Widowers

Date Publication Publisher Type Page
January 1990 Cover Puzzles of the Black Widowers Doubleday (UK) Collection 193
January 1990 Cover Puzzles of the Black Widowers Doubleday Collection 193
April 1991 Cover Puzzles of the Black Widowers Bantam Books (UK) Collection 193