[StephanTLavavej]

On the "How Was It Typed" page, Note 6 and beyond are using the same image, and link to an "http://xxxx" placeholder. Different images appear to have been intended (e.g. a Roman Numeral technique is described in the text).

Thanks for this writeup and fascinating analysis - I hope more of the mystery can be solved!

[billr9999]

Sorry Sam posted while graphics are being processed they'll be up soon...