"Notes on Nursing" is Nightingale's best-known work and the most
influential book ever written on nursing. In simple, direct prose, Nightingale
set forth her principles of patient care, which stressed cleanliness, fresh air,
warmth, light, and proper diet. A popular book, Notes sold over 15,000
copies within months. Nightingale inscribed this copy in its year of publication.
Cartes-de-visite were small, mass-produced cards with photographic
portraits of notable people. They were very popular in the mid-19th century and
frequently kept as souvenirs. The production of cartes-de-visite with
Nightingale's portrait attests to her fame. Although Nightingale signed this
card in 1867, the photograph was likely taken in London soon after her return
from the Crimea.