I finally have it sorted! Thanks to the 1901 census. On map in post no. 24 the one on the left labelled Hospl is the sanatorium and had 5 nurses, 4 servants and 15 patients. At the same time, 1901, the one in the centre labelled Bagthorpe Hospital was on the census called City Isolation Hospital and had 24 medical staff, 25 servants and other staff and 93 patients. Later on the sanatorium became a hospital for the elderly and was demolished, and city isolation hospital became Heathfield. What I am looking for is any photos of the small sanatorium. Can anyone identify which hospital the photo