 He authored 18 books and over 400 articles and book reviews.Piotr S. Wandycz was a member of the Polish Academy of Sciences, the Polish Institute of Arts and Sciences of America, the Polish Academy of Learning, and an honorary member of the Polish Historical Association.His many other honors included the Commander's Cross of the Order of Polonia Restituta and honorary degrees from the University of Wrocław, the Sorbonne, the Jagiellonian University, and the Catholic University of Lublin.