The Printed Image in the West: Mezzotint – The Metropolitan Museum of Art https://www.metmuseum.org/essays/the-printed-image-in-the-west-mezzotint
Since a mezzotint can be made more rapidly, and less expensively, than a line engraving (although it yields fewer impressions), it became a favorite means for the quick dissemination of timely images.
copper-plate it [the mezzotint] is done upon, when the artist first takes it into hand
