Artists he produced works for included Pietro Testa , Cornelis Bloemaert , Pietro da Cortona , Nicolas Poussin , Charles Le Brun , Simon Vouet , and Jean Le Pautre .
Although he started as an engraver , Collignon became a major figure in publishing and print - selling .
Artists Collignon produced works for included Pietro Testa , Cornelis Bloemaert , Pietro da Cortona , Nicolas Poussin , Charles Le Brun , Simon Vouet , and Jean Le Pautre .
Although he started as an engraver , Collignon became a major figure in publishing and print - selling .