Michelle, From the How-to instructions on searching the 1911 census: Institutions People in institutions like prisons, army and police barracks, asylums and workhouses were often listed in the census only by their initials. Thus, Mary Smith will be listed only as M.S. If you think the person you seek was in an institution in 1911, first try the return for the institution, if you know it, as the ancillary information on the return (age, county of birth, previous occupation etc.) will help you to decide whether this is the right person. If you don't know the institution, or merely suspect that someone might have been in one, use their initials plus the age and sex boxes to narrow it down, eg M S, 25, female. Jack Langton