My ancestor Naphtaly Kuttner died in Oakland, CA the 25th April 1903. In his obituary is listed as his sister Mrs R. Cohn of Brooklyn (R. being the abbreviation for her name and not her husband's name). I tried for many months to find her and I so far have been unsuccessful. I would not mind some help if you know how to look in the records of the Jewish community of Brooklyn or any other magic trick you might know.
Naphtaly was born in Leszno, Poland and had an another sister living in Brooklyn named Charlotte Bieber married to William Bieber.
Thanks for your help,