Here are photos of the gravestones of Joseph and Lena Rabinowitz at Mt. Zion Cemetery in Queens. Note that Joseph is identified in both Hebrew and English as "Yehuda Noah" and not Yosef, which raises the question as to why he has come down to us as Joseph. He is also identifed as the son of Abrhaham Yoel and Leah as the daughter of Abraham Yaakov.
I am still working on the Hebrew translation, especially of Joseph's grave, which is quite poetic with the first line saying something like "For these, we are weeping" and the third line something like "From my head fell the crown".
Lena's grave identifies her as "our dear mother" and something like a "woman of righteousness"--but let me get the full translation because I am missing some important stuff from both of them.
Gene and I were moved by the cramped setting with a factory smokestack looking over the old cemetery which is clearly a slightly earlier and decidedly less opulent setting than Mt. Hebron several miles east where Walter and Selma Ruby are buried. More as soon as I get full translations...