[1][2] S.S. Nieuw-Amsterdam sailing from Rotterdam, May 26th, 1948. Arriving at Port of New York, April 3, 1948. Destination: Uncle S. Vanderby Cylinder Iowa
"United States Social Security Death Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JLBM-42C : accessed 07 Nov 2013), Sam Wiersma, 18 January 1994; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
Name: Sam Wiersma Date of Death: 18 Jan 1994 Place of Death: Olympia Age: 69 Estimated Birth Year: abt 1925 Residence: Olympia Gender: Male SSN: 534-30-5702 Certificate: 001996