Colleen Corradi Brannigan contributed to more Invisible Cities than any other visual artist, having created numerous watercolor, acrylic and oil paintings, drawings, etchings and sculptures illuminating Calvino’s texts over the years. She collaborated on eleven Cities: Anastasia, Andria, Beersheba, Chloe, Euphemia, Leandra, Penthisilea, Procopia, Pyrrha, Theodora, and Trude.