I am trying to identify an early 20th century photo portrait. The name of the photography studio is stamped on the photo and is almost entirely illegible (I've attached a scan of the stamp here). I can make out the first name of the studio as "Johanne.".. As best I can tell, the studio is in Europe. My questions:
1. Does anyone recognize the stamp and the photo studio? Or particularly the city?
2. Can anyone direct me to an online source of early 20th century photo portraits where I could look for a similar studio stamp?
3. Does anyone know of any online lists of early 20th century European photo studios? I know of several for the US but none for Europe.
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