I've recently inherited a package of old 11 x 14 orthochromatic litho film and I'm not sure what I should do with it. I remember years and years ago when just starting out in B&W photography playing around with Kodalith film and getting super high contrast positives from negatives. However, I don't know where to start with this. I don't know the manufacturer of this stuff (it's not labled) so don't know where to start out with film speeds, developing times, developer type, etc. As I remember, the old Kodalith film had a very slow film speed. Can I use a certain developer to get continuous tone copy negs rather than high contrast ones? I thought maybe I could use some 4 x 5 transparancies to try to make some artsy big negs to try some Platinum/Palladiums with. However, this is ortho film so it obviously isn't sensitive to all colors. Any suggestions?????