Hi! Elaina, If you have your great grandparents naturalization petition, it will tell you what ship, the port and the date they came into. LDS does have passenger films and most of their family history centers have a list on their computers of ships and their ports and you can order the ship passenger film from that. It costs $3.45 per film so, I would suggest to get a copy of the naturalization petition and certificate from the Providence Archives or from the National Archives in Waltham, Massachusetts. The National Archives usually house the Northeast Region. The naturalization petition will also tell you their last address, who sponsored them and their new address. Sometimes people who ended up in Providence and surrounding area also came into Boston, Fall River, New Bedford as well as Providence. Good luck in your search! It is wonderful to see your ancestors listed and all their information! Merry Christmas! Lynn W. Sylvester Georgia, USA