The year of publication can be determine on several ways:
– on the piece itself (embossing or written in pencil);
– on original paper/labels with piece (gallery labels / printmakers authentication paper);
– by literature (official exhibit of book publications or original promotion material);
– by statements of the printmaker.
Example: Great Grasslands Graphics Company Embossing 1975.
Written in pencil
Example: Year 1976 written next to signature: Norval Morrisseau /76.
Gallery label / Printmakers authentication paper
Example: Year 1978 written in Superb Graphics stamp: May 10/78.