"New York, Passenger Arrival Lists (Ellis Island), 1892-1924," index, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/JN2W-7X9 : accessed 27 February 2015), Jacobus J. Servaas, 27 Sep 1924; citing departure port Rotterdam, arrival port New York, ship name Veendam, NARA microfilm publication T715 and M237 (Washington D.C.: National Archives and Records Administration, n.d.).