Call the Midwife (book) – Wikipedia

Call the Midwife, later called Call the Midwife: A True Story of the East End in the 1950s, is a memoir by Jennifer Worth, and the first in a trilogy of books describing her work as a district nurse and midwife in the East End of London during the 1950s. Worth wrote the book after retiring from a subsequent career as a musician, and it was originally published in July 2002.

https://en.wikipedia.org/wiki/Call_the_Midwife_%28book%29