Ricky and Sean Gabrielson, 23-year-old identical twins, are the first men to travel through time, taking ever larger swings that send one backward and one forward.

This was the first book that I read in the rare books room of the University of Colorado library from the Brian E. Lebowitz Collection of 20th Century Jewish American Literature.
Hi there. You’re not going to believe this, but I’m you of the year 2016, taking part in the first time-travel experiment ever.

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  1. Project Pendulum by Robert Silverberg (Walker, September 1987).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Robert Silverberg