"François Joullain (1697–1778) was a French etcher, engraver and art dealer. His career and that of his son, François-Charles Joullain (died 1790), expanded from their initial roles as engravers and printmakers to merchants of paintings and publishers. He became a noted publisher for producing books of engravings which were of high quality and very popular in the 18th century and a prominent art dealer in Paris." - (Wikipedia (en) 27.10.2020)
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