US newspapers have included obituaries from the 1600s. These increased as the size of
My experience is that obits or paid announcements of death on our immigrant relatives did not begin to appear until the deceased had some wealth, generally in the late 1930s. Even one of my wealthy great-uncles who died in 1934 did not have an obit, but I did find information on the filing of his will for probate.
Where to look depends on where the relatives lived and what newspapers have been digitized. Newspapers.com, NewspaperArchives.com, Ancestry (usually refers to Newspaper.com). These do not include many NY area newspapers in which I'm most interested. NYTimes is searchable for the life of the newspaper or is available through
ProQuest (often available at libraries). Many universities have access to digitized newspapers. Library of Congress has Chronicling America for searchable newspapers. You might get a more direct response if you pose the areas that you are researching in the US.
Secaucus NJ USA
HASSMAN, SONENTHAL, DAUERMAN, LUCHS - Drohobycz, Ukraine
HIRSCHHORN, GOLDSTEIN, BUCHWALD - Dolyna, Ukraine
ELLMAN, COIRA, MAIDMAN - Minkovtsy, Ukraine
KAGLE, FASS - Ulanow, Poland