Can we make isoglosses?

[Koen G]

Who said that "gas mich" should be read as goat's milk?
When was that, and which person was that. Where is the written evidence and what is his linguistic background?

It was said by Professor of history You are not allowed to view links. Register or Login to view., born in Berlin, so I assume a native German speaker. Therefore, I would not dismiss it as quickly as the sunflowers. But it would be interesting to find the supposed dialectical background, if it exists. Unless "mich" is supposed to be a scribal abbreviation of "Milch", in which case it has nothing to do with dialect. But that feels like a weird place to abbreviate, and there appears to be no abbreviation mark either.

Also, there isn't more of a space between "gas" and "mi" than between "mi" and "ch", so it's likely that "gasmich" is one word, which would fit in the goatmilk narrative.