When on Earth? : History As You've Never Seen It Before.
New York: DK, 2015. First American edition, first printing. Illustrated boards.
New York: DK, 2015. First American edition, first printing. Illustrated boards.
Farrar, Straus and Giroux, 2014. First edition, first printing.
Harvard U. Press, 1988. First edition, first printing.
Harvard U. Press, 1989. Book Club edition.
Harvard U. Press, 1990. First edition, first printing.
Oxford, 1960. Reprint edition.
Weidenfeld & Nicolson, 1989. First U.S. edition.
Alfred A. Knopf, 2008. First edition, first printing. Hardcover, in dust jacket.
Indiana U. Press, 1988. First edition, first printing.
Free Press, 2007. First edition, first printing.
Wayne State U. Press, 1990. First edition, first printing.
W. W. Norton, 2003. First edition, first printing.
Oxford, 2004. Later printing.
New American Library, 2016. First edition, first printing.
Yale U. Press, 1988. Second printing.
MIT, 2007. First edition.
Alfred A. Knopf, 2003. Second printing.
Random House, 1983. First edition, first printing.
Random House, 1992. First edition, first printing.
Pantheon, 1988. First edition, first printing.
Tim Duggan, 2019. First edition, first printing.
HarperCollins, 1992. Abridged edition, first printing thus.
Charles E. Tuttle, 1967. First edition, first printing.
Seaforth, 2013. First edition, first printing.
Broadway, 2005. First U.S. illustrated edition.