Puzzles And Curious Problems by Henry Ernest Dudeney (Thomas Nelson And Sons, London, Edinburgh, Paris, Melbourne, Toronto, and NY, 1931 1st edition, 8 by 5.75 inches, hard cover, 195 pages; preface by Alice Dudeney)	A Puzzle-Mine by Henry Ernest Dudeney (Thomas Nelson And Sons, London, Edinburgh, Paris, Melbourne, Toronto, and NY, undated, 8 by 5.5 inches, hard cover, 230 pages; "1941 1st edition" hand written on title page; edited by J. Travers)
536 Puzzles And Curious Problems by Henry Ernest Dudeney (Thomas Nelson And Sons, Charles Scribner's Sons NY, 1967 1st edition, 9 by 6.75 inches, hard cover, 428 pages; introduction by Martin Gardner)	These books were published after H. E. Dudeney's death, and overlap with his original books. The introduction by Martin Gardner in the 1967 book to the left gives a nice summary of Dudeney's contributions.