Italo Calvino (] ; 15 October 1923 – 19 September 1985) was an Italian journalist and writer of short stories and novels. His best known works include the "Our Ancestors" trilogy (1952–1959), the "Cosmicomics" collection of short stories (1965), and the novels "Invisible Cities" (1972) and "If on a winter's night a traveler" (1979).
Italo Calvino wrote Invisible Cities at the age of 49.
He was born in 1923 which is 49 years before the book Invisible Cities was written in 1972.