Passenger records Rotterdam 1921 #general

Mary Henderson

Hi, all!
I'm hoping to locate emigration information on Ida Groener/Groner who left Rotterdam for the United States on the SS Noordam and arrived in the US on Oct. 23, 1921, according to her petition for naturalization.  I thought I would be able to use the City of Rotterdam (Netherlands) Archives passenger lists of the Holland-America Line:
But it looks like the records only go through 1920.  Are there any other resources I can use to find her emigration papers from 1921?  I'm hoping to find something that will confirm who her parents are - her mother is believed to be Helene Rosenbaum, but I don't have anything to substantiate that.
Thank you!   
Mary Henderson 

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