Harvey Roehl at the Vestal Press once published a set of twenty
9" x 12" black and white photos of exteriors and interiors of
various models of Coinola and Reproduco instruments.  The set
includes a photo of an early Coinola X and a late Duplex Midget,
so it isn't obvious in what year they were originally published.

Does anyone know where Harvey obtained them, or when they were
originally published?

Art Reblitz
http://www.reblitzrestorations.com/