The cover of a book on the Transit of Venus by Henry Chamberlain Russell

1882 Transit of Venus from US Naval Observatory

The black drop effect and Venus's atmosphere sketched by Captain Cook
and published in the Philosophical Transactions of the Royal Society.

The black drop effect drawn by Thobern Bergman and published in
the Philosophical Transactions of the Royal Society.

Stained glass window from the church at Much Hoole
showing Horrocks's original observations.