- Adding A Dimension, Doubleday, 1964 - Adding A Dimension, Lancer, 1969 - Adding A Dimension, Discus, Mar-75 - Adding A Dimension, Avon, 1977 - Adding A Dimension, Avon, - Asimov On Numbers, Doubleday, 1977 - Asimov On Numbers, Bell Publishing, 1982 - Asimov On Numbers, Pocket Books, 1983 - Asimov On Numbers, Pocket Books, Oct-78 Victory on Paper, Sep-55, Astounding
- Only A Trillion, Abelard-Schuman, 1957 - Only A Trillion, Ace, 1976 View from Amalthea, Dec-68, The Magazine of Fantasy and Science Fiction
- The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Doubleday, 1970 Violence - as Human as Thumbs, 14-Jun-75, Genesis
- The Roving Mind, Prometheus Books, 1983 - The Roving Mind, Prometheus Books, 1983 Visit to the World's Fair of 2014, 16-Aug-64, North American Review
- Is Anyone There?, Ace, 1967 - Is Anyone There?, Doubleday, 1967 - Is Anyone There?, Ace, 1970
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