In the present study, we investigated a unique set of historical health-care records of women admitted to a psychiatric hospital in Sydney, Australia with a diagnosis of psychosis or mania after childbirth in the post-World War II (WWII) period, from 1945 to 1955. This research is part of a larger project examining how the descriptions of these women documented in the health-care records from 1885 to 1975 affected their treatment and the outcome of their admission. In the present paper, we report on the findings from an intensive examination of the post WWII documents. Eighteen health-care records from a psychiatric facility (Gladesville Hospital) were identified from admission registers housed in the State Records Office of New South Wales in 2014. Although seven records had been destroyed, 11 were transcribed verbatim. The records contain demographic information; descriptions of the women's signs and symptoms on admission; and information about the women before, during, and after their admission found in letters from relatives or medical staff. A content analysis of admission information showed how the women were described by health-care professionals, but a textual analysis of the records revealed that there were other factors that could have contributed to the women's condition, which might not have been taken into consideration when treatment and care were devised. The present study demonstrates the value of investigating historical health-care records to understand how prevailing attitudes and practices might affect diagnosis and treatment.