When was "Labourers" created?

This artwork was created March 25, 1790.

What medium is "Labourers"?

Labourers is Mezzotint; second state of four.

Yes, Labourers is in the public domain and available for free download under CC0 license.

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Labourers was created by George Stubbs|Amos Greene|Richard Earlom|Robert Laurie|Benjamin Beale Evans in March 25, 1790.

George Stubbs|Amos Greene|Richard Earlom|Robert Laurie|Benjamin Beale Evans, March 25, 1790