Need Help Finding Death and Burial Records #usa

Sandy Kaplan Schepis

My granduncle, Sam Kaplan, is giving me a run for my money, so I would welcome help finding his death and burial records.
Sam's parents were Yakov Mikhel Hacohen Kaplan and Hinda Rubnitz. He arrived at Ellis Island from Starobin, Minsk, now Belarus, in 1912. He married Ida Paskovat (various spellings) who arrived at Ellis Island from Slonim, Belarus in 1914. They had two children: Max Kaplan (1915-1992) and Anne Kaplan Stern (1916-1970).
I have been able to trace Sam pretty well though Federal and NYS censuses from 1915 -1940, but am not sure of what I have for the 1950 census where the ages fit the earlier DOB but the wife's name is Yetta instead of Ida. An easy mistake? They lived in Manhattan, Elizabeth, New Jersey and Brooklyn. 
I have searched in Ancestry, FamilySearch, and others, but have not been able to find death and burial records or obituaries for Sam and Ida. Sam's naturalization papers list his DOB as October 12, 1896 but his ship manifest and all census records point to a DOB from 1891-1893. Sam is not buried near his son or daughter, nor does he appear to be buried in any of the large Jewish cemeteries in the New York metropolitan area. If I can find Sam, I am hoping that Ida will be right next to him!
I have posted links to the relevant 1940 and 1950 censuses below.
Thanks for your time and willingness to give this one a try!
Sandy Kaplan Schepis

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