Stereographs
Planographic prints
Photogravures
Woodburytypes
Rotogravures
Photolithographs
Photoengravings
Photocopies
Photochrom prints
Offset photomechanical prints
Line photoengravings
Halftone photomechanical prints
Collotypes
Photographic prints
Anaglyphs
Halftone negatives
Transmitted images
Stereotype printing block with zinc plate on wooden base, National Mutual Group of Companies logo
Stereotype printing block with zinc metal plate, National Mutual Low Cost Unit-Plan
