1. Statistical Review of England and Wales;Registrar General (England and Wales);Decennial Supplement for England and Wales,1951
2. Statistical Review of England and Wales for the year 1960. Part I. Tables, Medical,1962
3. Statistical Review of England and Wales for the year 1954. Part III, Commentary,1957
4. "From 1st January, 1958, a death in a chronic sick hospital or a mental hospital will be assigned to the area of occurrence only if the deceased had been there for six months or more. If the deceased had been there for less than six months, the death will be transferred to the area of usual residence, if any." General Register Office Circular (M.O.H.) No. 2/1958. Dated Jan. 10, 1958.