1996
 

The Backyard Astronomer: A Guide to Stargazing, Michael Friedman Publishing Group, Inc., New York, NY, 1996;  ISBN 1-56799-343-5;   

Inne Słońca, Inne Światy?, (translated into Polish from Other Suns, Other Worlds?),  Proszyński I S-ka, Warsaw, Poland,  1996;   ISBN 83-7180-300-1

1995
 

Other Suns. Other Worlds?, co-authored with Donald W. McCarthy, Jr., St. Martin's Press, New York, NY, 1995;  ISBN 0-312-14021-5

1993
 

The Night Sky: An Observer's Guide, Michael Friedman Publishing Group, Inc., 1993; ISBN 0-7924-5689-0

1993
 

Start Exploring Space: A Fact-Filled Coloring Book, Running Press, Philadelphia, PA, 1991; ISBN 0-89471-864-9

1990
 

Star Hunters: The Quest to Discover the Secrets of the Universe, Michael Friedman Publishing Group, Inc., New York, NY, 1990;  ISBN 1-86325-084-0

1989
 

Start Exploring the Night Sky, Running Press, Philadelphia, PA, 1989;
ISBN 0-89471-764-2