David Levy asks about pictures of Winkel's Componium.  There are
several pictures in Arthur W J G Ord-Hume's book, "Barrel Organ",
published by George Allen & Unwin in 1978 (ISBN 0047890053).

I assume these were Arthur's own pictures, so he might still have them.
If so, copyright would be with Arthur or the publishers, I would think.
I may have a phone number for Arthur if David e-mails me direct.

John Farmer, UK
(Archivist, MBSGB)