This
photograph of John Cay is a calotype taken by Hill & Adamson between 1843
and 1847.
Edinburgh Calotype Club
John Cay was a Member
of the Edinburgh Calotype Club,
which was formed in the 1840s. Some of his photos are included in the
Edinburgh Calotype Club Album.
Photographic Society of
Scotland
John Cay went on to become
a Founding Member of the Photographic Society of Scotland in 1856, and the
Society's Honorary Auditor from 1857 until 1865.