A series containing files of correspondence collected within the Thos. Agnew & Sons archive dating between 1818 and 2012. These include letters between Agnew's and artists, clients, and organisations which discuss subjects as varied as exhibitions, sales and purchases of works of art, legal agreements, and the publication of Agnew's Anniversary volumes.
Pockets of correspondence can also be found throughout the archive, where they are interspersed within other series.