Ina is the author of "The Road from the Past: Traveling through History in France" (1996), a book which Arthur Schlesinger, Jr. called, at the presentation of her honorary Doctor of Humane Letters from The City University of New York in 2011, "the essential traveling companion ... for all who love France and its history." "Newsweek" reviewer Peter Prescott commented, "I'd rather go to France with Ina Caro than with Henry Adams or Henry James. The unique premise of her intelligent and discerning book is so startling that it's a wonder no one has thought of it before." Ina frequently writes about her travels through France in her blog, Paris to the Past. In June 2011, W. W. Norton published her second book, "Paris to the Past: Traveling through French History by Train".