I think I have one but Gawd only knows where it is. I could look for a week and never find it in these gazillions of boxes. It might help if you post pics of the camera, especially the back.
Bump- still hoping.... I have used a pack film back and taped wax paper, as someone suggested- yes it works, but hoping someone has a junker... or, next I'll learn how to make Ground Glass.... why not, life's too short not to try to learn new stuff, eh?