This is a KMZ of some flat maps of Budapest . This file is over 25MB, so I've stored it on my own server space. It's huge because I didn't want to lose the detail when I scanned the maps. Hope this works on this site.

https://vspace.vassar.edu/mestewart/Epstein/Budapest.kmz

I made another similar one for Prague and will make one for Berlin.
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Meg Stewart Academic Computing Services - GIS Vassar College