I just registered with Photrio because I became the owner of a beautiful Crown View camera yesterday. It has a 4x5 back, and modern film holders fit in perfectly. However, I also want to shoot Zebra dry plates and was wondering if you know of any plate holders that fit my camera. In Europe, I can only find sheet metal holders for Zeiss or Voigtländer cameras, for example, which do not fit 4x5 camera backs.
Zebra 4x5 Dual Dry Plate Holder V2 is a modern take on a traditional glass plate holder. It is universal and can accept glass & tin plates as well as film!
I would think you could use an old film pack holder to expose glass plates. Might have to put some spacers on the top and bottom to center the plate to the aperture (not sure) and cover the tension springs with some thin cloth tape to avoid scratching the back of the plate. Like a film holder, it would have to be loaded in the dark and it has a integral dark slide like a film holder.
If it works (and I don't see why it would not), these film pack holders are plentiful and very inexpensive, as the pack film is no longer made.
I converted a film pack holder for my Graflex Reflex Model D 4x5 into a ground glass holder, but the same principal would apply to a Crown/Speed Graphic film pack holder.