Notes
1 https://artsandculture.google.com/story/the-discovery-of-the-marsala-punic-ship-honor-frost-foundation/2QWhIN7Uu9SK-Q. https://en.wikipedia.org/wiki/Marsala_Punic_shipwreck.
2 Hadley and Singmaster (Citation1992).
4 These days the Gazetteer is available at https://mathshistory.st-andrews.ac.uk/Gaz/; David Singmaster is credited, and a link to the archived BSHM version on the Wayback Machine is provided.
5 Singmaster (Citation2021, Citation2022).
6 Sample chapter: David Singmaster, ‘Why Recreational Mathematics’ https://doi.org/10.1142/9789811226045_0001.