200 years of mental health history from the Retreat Archive are now available to view online. The archive, containing over 650,000 digital images, are freely available to view online via the Wellcome Collection website. You can also browse The Retreat archive through the Borthwick Catalogue and follow the links within to the digital content for references of interest.
See https://www.york.ac.uk/borthwick/projects/retreat/ for more information.