Dyes in History and Archaeology (DHA) is an annual conference that focuses on the discussion of dyes and organic pigments used in the past.
This includes their history, production, application and properties, as well as their analytical characterisation and identification, mainly in textile objects, but also on painted surfaces. Every year, the meeting attracts conservators, curators, (technical) art historians, craftspeople, artists, independent scholars, scientists and academics from museums, universities, research centres and other public or private institutions.
The first meeting was held in 1982. The 44th meeting will be held in Ottawa, Canada. More information here.
See details of past meetings here.
Read more about the early history of the Dyes in History and Archaeology meetings in this article by Vincent Daniels, which first appeared in an occasional DHA e-newsletter produced by Archetype in 2017.