Dear MMD Friend,  I have had the same Ehrlich Orchestrionette
in my museum and, at this time, I have found a very good article
in the magazine of the German association GSM, "Das Mechanische
Musikinstrument", with a very interesting description and pictures.

But there is just a little problem -- all my books are not
accessible now.  Please ask to the GSM editor, Bernhard Häberle
<redaktion@musica-mechanica.de.geentroep> [delete ".geentroep"
to reply].  Most probably he has a solution for you.

Best regards from France,
Françoise Dussour