Article date: Nov 1966
Article title: Is it possible to visualize a four-dimensional figure?
Mathematical Games column? Y
Book: 7. Mathematical Carnival
Chapter: 4. Hypercubes
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.