Found this website with a page referencing Milsch and, in the tab labelled "Map", there is a pin locating where Milsch was at one time:
https://www.meyersgaz.org/place/20186023
Moving to the next name, "Kolmar", I found this referencing Milsch as it was in 1895, with a population of 350; it would appear Milsch may have ceased to exist as a separate entity after he fall of the Prussian State in 1918:
https://en.wikipedia.org/wiki/Standesamt_Kolmar
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