When I bought my 1950 4x5 speed graphic it came with about 12 film holders. In about 4 of the holders I've noticed there is still film loaded in them. The silver side is out on the darkslides, so I'm betting that they are unexposed, but I would still like to develop them to see if anything might be on them. When I bought this camera I was told it had been in storage for a # of years. It's possible the film inside is "Super Pancro Press Type B" film because there is a sheet taped to the back of the camera with flash suggestions with this type of film. Any suggestions on developing this type in D76 @ 70 degrees? Who knows, this could have long lost images of Marilyn Monroe.
Mark Z

the problem with old laten images is the image is fading as fog is building. You'll probably want a weak chemical developer supressed with some benzotriozole (sp?) to keep down the fog. This will produce a weak image. Then its off to the physcial developers to bring the image back.

At least that's what we did in the 80s when silver was king a silicon was only good for beaches. I'd ask the good people at http://www.photoformulary.com
They will be able to supply you with the proper carcinogenic chemical you'll need.

If it is Super Panchro Press B it will have three triangular notches. I used DK-50, 1:1, for about eight or nine minutes if I remember correctly. Of course that was for fresh film.

As for the age, and degradation of the latent image, all I can say is give it a try if you want to. I was astonished recently when a guy at the office found a roll of 35mm black and white film that had been kicking around in his junk for years. When developed it was actually quite good all things considered. Based on the subjects he said that the roll was at least TWENTY years old!!! And it had been kept in a hot attic. I myself developed a roll that was ten years old and it came out OK. So you can never tell.