We learned from Harriet that Sadie Rabinowitz's son Arthur Zimkin married a Frieda. We have an intriguing 1965 Canadian engagement announcement for Mark Raymond Zimkin, son of Arthur J. Zimkin of New York. Now from Ancestry, below is a Social Security death index for Frieda Zimkin indicating that she resided and received social security benefits in Canada.
(She was age 64 at death. Would she have been eligible for benefits? I looked it up. Eligibility for female workers and widows was extended to age 62 beginning in 1956-—for men in 1961.)
Could be that Mark settled with his wife Phyllis in her hometown of Montreal, and that later his mother Frieda came to live with them. Speculation of course. If true, we'd like to find out if Mark and/or Phyllis are living, and whether they had children.
Name: Frieda Zimkin
Last Residence: 953 (U.S. Consulate), Canada
Born: 31 Dec 1912
Last Benefit: 953 (U.S. Consulate), Canada
Died: Jul 1977
State (Year) SSN issued: New York (Before 1951)