Years ago, I was acquainted with Elba Gurzau, who was an expert on Italian folk dances. She studied in Italy, and received a commendation from the Italian Government for her work in teaching and organizing performing groups in the US. She passed on three years ago, but her book, Folk Dances, Costumes, and Customs of Italy was recently revised and is available hereItalian Folk Arts Federation of America Books and Videos, as are some other instructional materials.