Sanderson Cemetery

Death certificates say that these folks were buried at Sanderson Cemetery. I need to know if this was a separate cemetery or if it's a reference for one of the cemeteries in town. From my reading, I'm guessing it was a separate cemetery washed away in the flood and bodies were reinterred at Cedar Grove. I would really appreciate help from a local on this.
Last First Birth Death Notes/Inscriptions
Barron Jose 19 Mar 1890 9 Sep 1965
Befinio Infant 7 Apr 1928 16 Jun 1928
Castro Manuel unknown 2007 Find a Grave Memorial ID: 19085229
Cox Harmon 30 Dec 1872 8 Jun 1952 Find a Grave Memorial ID: 29541041
Dugger Chester Albert 24 Sep 1908 19 Sep 1969 Find a Grave Memorial ID: 32564051
Galvan Paul 31 Jul 1950 31 Jul 1950
Happle James Wilson 5 Feb 1875 17 Jan 1959 Find a Grave Memorial ID: 50187588
Perez Paula Pena 25 Jan 1902 26 Feb 1955
Sanchez Jose Maria 1873 6 Jun 1923
Savage James Walter 31 Oct 1849 12 Nov 1935 Find a Grave Memorial ID: 30586592
Savage Margaret Closner 28 Aug 1855 26 Mar 1938 Find a Grave Memorial ID: 30586954
Taylor John R. 9 Sep 1869 29 Nov 1933 Find a Grave Memorial ID: 51888710
Wilkinson Ima Crozier unknown 9 Feb 2007 Find a Grave Memorial ID: 17979345
Wolff Joseph W. 18 Feb 1866 19 Sep 1938 Find a Grave Memorial ID: 33336654
Wolff Mary Jane 6 Oct 1873 25 Nov 1959 Find a Grave Memorial ID: 39753792