I know this is a long shot but I am looking for information about National Fotocolor one-shot cameras. These cameras were made in the 1940s and were used to make three-color separations on B&W film. By information I mean any brochures or literature about these cameras from the period and/or any modern literature. My interest in this is that I have one of these cameras, a 5X7 model, and am about to restore it to working order.
Interestingly, the company that originally produced these cameras, National Fotocolor, is still in business selling pellicle bean splitters and other optical products, and they can supply me with replacements for the old pellicles in my camera. However, because of change of ownership over the years they have no history and little knowledge of these cameras.
Any information provided will be greatly appreciated.