Ref: Dutt, W.A., The Ancient Mark-Stones of East Anglia, Flood & Sons
Scans here:
https://www.cantab.net/users/michael.behrend/repubs/dutt_markstones/pages/index.html
or
christiansfortruth.com/wp-content/uploads/2019/10/The-Ancient-Mark-Stones-of-East-Anglia-Their-Origin-and-Folklore.pdf (dodgy link so I'm not linking to it but the PDF is there to download)
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