The Retreat ArchiveDigitised archive of administrative, financial, staff, estate and patient records from The Retreat in York - one of the most important institutions for the care and treatment of mental health patients. The archive spans the period 1792-2000, and includes over 650,000 digital images (note that patient records from 1920 onwards were excluded from the digitisation project). The original papers are held at the Borthwick Institute for Archives at the University of York.