Article date: Sep 1969
Article title: Geometric constructions with a compass and a straightedge, and also with a compass alone
Mathematical Games column? Y
Book: 9. Mathematical Circus
Chapter: 17. Mascheroni Constructions
This data confirmed? yes
Notes
Peter Rowlett (27 August 2022):
Peter Rowlett initial guess (Uncertain)
Peter Rowlett (2 September 2022):
I have seen copies of Scientific American Sept 1969 and Mascheroni Constructions in Mathematical Circus and these match.