I am trying to find the date and location of Charles Tass' (b. 1865, Groede, Holland) first arrival in the USA. His parents, Josephus Tas, b. 1827, and Sophia Reiteko, b. 1830, and four siblings arrived in New York on July 18, 1885, aboard the Leerdam, out of Rotterdam. Charles became a naturalized citizen on Mar 11, 1893 in Cresco, Iowa. He apparently traveled back to Europe and then arrived back in New York on Feb 10, 1894, on the Rotterdam; port of departure: Boulogne Mer. Any assistance in this search would be most appreciated.