"Alte Oper " in Frankfurt am Main, about 1900 . ] ] "'Collotype "'is a dichromate-based photographic process invented by Alphonse Poitevin in 1856 and used for large volume mechanical printing before the existence of cheaper offset lithography.
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Show them a picture of O . J . Simpson and Dan Rather embracing as they levitate over a toppled statue of Vladimir Lenin, or something similarly startling, and their response would be, " Is that an etching, aquatint, salt-ground and collotype, or is it a lithograph, engraving, aquatint and sugarlift ?"
