Henry Ernest Dudeney/Puzzles and Curious Problems/160 - Boxes of Cordite/Historical Note

== Historical Note on by : $160$ - Boxes of Cordite == reports that this puzzle is the work of one W. H.-J., but it is not apparent who that person is.

When the collection was edited for its $1968$ re-publication, the presentation of these initials was changed to W. H. J.