This collection originally published: New York : Random House, 1963 ; London : Reinhardt, 1965.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Alfred Hitchcock's solve-them-yourself-mysteries by Alfred Hitchcock. ISBN 0006909086. Published by Armada in 1979. Publication and catalogue information, links to buy online and reader comments.
