David,

On the 1930 census in Princeton, Illinois, Jake Brostoff is 28 years old, single, born in Russia, arrived 1921, and has petitioned for naturalization.  He is a roomer in the home of Abraham NATHAN, who was also born in Russia.

Since Jake works in an accessory store, and Abraham NATHAN owns an accessory store, I would assume Jake works in Abraham's store.

In some cases the family a recent immigrant is living with may be related, or from the same shtetl.

Regards,

Sherri Bobish