Detail showing windmills from key to Eyre's view of Sydney Cove from the west c1809 By John Heaviside Clark John Eyre Contributed By National Library of Australia [http://nla.gov.au/nla.obj-135182595] (Detail from a key to the aquatints by John Heaviside Clark from J. Eyre's watercolours, published London, 1810; the principal buildings are identified in the artist's hand on the drawing.)