Paul J. Nahin

The Logician and the Engineer

An Imaginary Tale

The Mathematical Radio

When Least Is Best

Time Machine Tales

Inside Interesting Integrals

Time Machine Tales: The Science Fiction Adventures and Philosophical Puzzles of Time Travel (The Science and Fiction Series)

The Logician and the Engineer (Unabridged)

Holy Sci-Fi!: Where Science Fiction and Religion Intersect (The Science and Fiction Series)