The administrative records for St Lawrence's are available at Cornwall Record Office, while patient records are still held at the hospital. Full records of Fisherton House from the early 19th century are deposited at Wiltshire Record Office. These include admission and discharge registers, 1813-1950s, and case books from 1846 (the former include place of origin for patients).
Moorhaven Hospital opened in 1891 and closed in 1993. Plymouth was one of the last authorities to meet its obligations to the mentally ill under the Lunacy Act of 1890. The borough had maintained lunatics in the local workhouse, or sent patients to St Lawrence's Hospital, Bodmin or Fisherton House, Salisbury, the latter a privately licenced house. From 1856 the Commissioners in Lunacy at Whitehall corresponded with the Borough regarding provision of an asylum for pauper lunatics [PRO Kew MH83/56-60]. The site at Blackadon was acquired in the 1880s, but financial disputes further delayed the building of the hospital.