'Aha! Gotcha' was originally published: San Francisco, Calif. : W.H. Freeman, c1982; while 'Aha! Insight' was originally published: New York : Scientific American, c1978.
Aha! : a two volume collection : aha! gotcha, aha! insight by Martin Gardner. ISBN 9780883855515. Published by Mathematical Association of America in 2006. Publication and catalogue information, links to buy online and reader comments.