The Rosenbergs in 1920

These census records give 1910 as the year of immigration of most.

Ida Malley (32) and her husband Isadore (35) live in Detroit. Their son Max (11) and daughter Marian (8) have New York for birthplace, Michigan for Louis (16 mos). New York is also given as Ida's birthplace, and as the birthplace of the mother (Ida) of Max, Marian, and Louis. Isadore gives his birthplace as Russia, with 1905 as the year of immigration. Date is Feb 4th, 1920 so Ida likely was born in New York in 1888. Isadore gives "ironing clothes in a laundry" as his profession.

Minnie Adler (31) and her husband Nathan (41) live in New Rochelle. Four of the children (Lewis, Rose, Bertha, and Ruth) are of Louis' late wife. Mary (7) is Minnie's daughter from her first marriage. The infant May is the child of Minnie and Nathan. Nathan has a cigar store. Lewis (16) works there. All the kids have New York as their birthplace. Parents list Russia. Minnie gives 1910 as her year of immigration. Date is January 8th/9th

Eva Gassman (25), her husband Abraham (30) and their daughter Gwendolyn (3) live at 1788 Lexington Ave (100th Street). Eva gives Russia as her birthplace and 1910 as the year of immigration. Abraham gives 1892 as his. He is a manager at Western Union. Date is January 10th.

Jacob (53) and Eva (53) live around the corner at 177 E100th St with their son Harry (23) and daughter Frances. All list Russia as their birthplace as 1910 as the year of immigration. Harry (Aaron) is a law student. Frances is a sales lady in a dept store. Jacob is a building contractor. Date is January 3rd.

So how did Ida came to be born in the U.S. in 1887 and Minnie in Russia in 1888? Ida is the only one with English as her mother tongue. If Ida remained in the U.S. while Jacob and Rachael returned to Russia whom did she live with? I cannot find a record in the 1910 (as Malley) or 1900 (as Rosenberg) census.

From 1910 until the 1920's Jacob's sister Ida Pullman was living in Brownsville, Brooklyn. Her husband Jonah's sisters Lean and Shaindel also lived in Brownsville,all within a block of each other, but quite far from E100th St in Manhattan.