Giovanni Fanelli, professor of Architecture History at the University of Florence, is the author of several works of architectural history, urban history, graphic arts and photography, translated into several languages; he has been the Scientific Director of the Fondazione Ragghianti (Lucca) and is series editor for a number of titles of Laterza publishers (Rome). Graphic designer, photographer, and collector Marc Walter (1949-2018) specialized in vintage travel photographs, particularly photochromes, of which he held one of the world's largest collections. He published numerous books featuring images from his collection as well as his own photographs. Sabine Arque is a photo researcher, editor, and author. She has collaborated on numerous publications on the themes of travel, the history of tourism, and photography.