Tombstone Tuesday (Or rather, tomestone-less Tuesday)

One of my recent trips that did not go so well was to visit Mount Moriah Cemetery in Philadelphia. Through death records (and some kind help from an Ancestry member!), I learned that two of my great grandmother, Mary Sellers's, previously unknown sisters were buried here.

My mom, girlfriend, and I went in early October of this year.I was prepared for the place to be in disrepair, as the cemetery is abandoned with little upkeep. When we first entered, the front of the cemetery looked decent, but the farther you move from the street, the worse the upkeep is. By the time we reached section 15, where my family is buried, it was not looking pretty.

We could see grave markers buried under the foliage, but there was no way to reach them without some serious landscaping tools. We're talking machetes. Unfortunately, these tombstones remain a mystery for now. Buried in this section were:

Josephine Sellers¹
06/20/1912 - 12/05/1912

Elizabeth Rebecca Sellers²
03/20/1901 - 12/04/1919
My great grandmother was raised in an orphanage from the age of 5 years old, and she did not have the opportunity to know much about most of her family members. In this particular family, there were at least 13 children, and only four that I am aware of survived to adulthood. I am searching for all the information I can get about her siblings now. I think Old Grandmom (as we charmingly called her) would like their stories to be known.
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¹Josephine Sellers, Death (5 Dec 1912); “Philadelphia, Pennsylvania, Death Certificates Index, 1803-1915,” digital image, Ancestry.com (http://www.ancestry.com : accessed 20 Nov 2012), citing Death Records, microfilm 1421355, Philadelphia City Archives.
²Genealogical Society of Pennsylvania, compiler, "Mount Moriah Cemetery Interrment Records," database, accessed by Lyla Taylor (28 Sep 2012). Database entry for Elizabeth Sellers (?-1919).