LOUISBOURG PRINTS Below: with exuberant colouring. 
From Nova Scotia, Charles P.de Volpi, 1974
A mezzotint, 8½ x 15: title, artist, engraver, and publisher indecipherable: courtesy Dianne O'Neill, Nova Scotia.
Possibly by J.H.Bastide, c 1700-1770, military engineer, Lieutenant-General in 1770.
In 1746, Warren stayed with the Bastide family in Boston.
and variation