Article date: Feb 1964
Article title: The hypnotic fascination of sliding-block puzzles
Mathematical Games column? Y
Book: 6. Martin Gardner's Sixth Book of Mathematical Games from Scientific American
Chapter: 7. Sliding-Block Puzzles
This data confirmed? yes
Notes
Peter Rowlett (27 August 2022):
Peter Rowlett initial guess (Uncertain)
Peter Rowlett (29 October 2023):
I have seen this chapter and column side-by-side and they match.