The SSDI (Social Security Death Index) isn't showing any "Ellen" under that birth date. Can see some 10 August 1907 deaths but under Helen. The social security index was up and running by about 1962.
These would need checked out - just in case the spelling of Ellen varied.
Helen Johnston - 10 Aug 1907 Mar 1976 - 13021 Auburn, Cayuga, New York.
Helen Foley - 10 Aug 1907 Mar 1986 - 13215 Syracuse, Onondaga, New York.
Helen E. Schoonraad - 10 Aug 1907 12 Mar 1989
Helen Szoka - 10 Aug 1907 Nov 1984 - 14214 Buffalo, Erie, New York.
Helen Feiner - 10 Aug 1907 Apr 1983 - 10471 Bronx, Bronx, New York.
Helen Lehmann - 10 Aug 1907 20 Jun 1998 - 34236 Sarasota, Sarasota, Florida.
Helen Kahan - 10 Aug 1907 29 Oct 1998 - 20910 Silver Spring, Montgomery, Maryland. Helen Gehrsitz - 10 Aug 1907 - 23 Mar 1989
Helen Hentschel - 10 Aug 1907 5 Jun 2000 - 06614 Easton, Fairfield, Connecticut.
Helen Ivison - 10 Aug 1907 16 Feb 1998 - 48302 Bloomfield Hills, Oakland, Michigan.
Helen M. Mathis - 10 Aug 1907 2 May 1994 - 13440 Rome, Oneida, New York.
Helen B. Geimer - 10 Aug 1907 - 24 Feb 2008 - 14618 Rochester, Monroe, New York
Helen Joki - 10 Aug 1907 20 Sep 1996 - 01543 Rutland, Worcester, Massachusetts.
Helen Tracy - 10 Aug 1907 Mar 1979
Sandra