Chuck wrote:

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The names sound German. Is Wolfgang still listening?
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I am still listening.  I can help with information about Steiner and 
Böker, but other than that I have the same "problem" as Don.

https://www.holzwerken.de/museum/hersteller/steiner.phtml
https://www.holzwerken.de/museum/hersteller/boeker.phtml

Wolfgang