Medical - interesting group of documents relating to Dr William Thiselton Dyer (1812-1865), a leading medical practitioner during the early 19th c. The group includes his appointment certificate as a doctor (a decorative certificate on a sheet of vellum), various letters either by him or other leading doctors at the time, a record of his baptism, a printed series of testimonials used by him to gain the post of Resident Medical Officer at Christ's Hospital and an example of his printed calling card