Here is link to family tree for Mr. Black.
http://trees.ancestry.com/tree/9399975/person/20032705
It shows that he still has a living sibling, though I am having trouble finding her.
Find a grave for his father
Birth: Mar. 16, 1886, Poland
Death: May 8, 1957
San Bernardino County
California, USA
Father of
Bernice Nanette Black (1915-1999)
Paul Marvin Black (1920-1996)
Family links:
Spouse:
Mary Rosenbloom Black (1894 - 1954)*
*Calculated relationship
Burial:
Montecito Memorial Park
Colton
San Bernardino County
California, USA
Plot: Rest Haven Mausoleum
Find a grave for mother
Birth: Nov. 20, 1894
Saint Paul
Ramsey County
Minnesota, USA
Death: Mar. 4, 1954
San Bernardino County
California, USA
Daughter of Barney(1855-1949) and Huldah Ida(Snell)91869-1941)Rosenbloom.
Mother of
Bernice Nanette Black (1915-1999)
Harmoniy Black
Paul Marvin Black (1920-1996
Family links:
Spouse:
Samuel Black (1886 - 1957)
Burial:
Montecito Memorial Park
Colton
San Bernardino County
California, USA
Plot: Rest Haven Mausoleum
A message board post for someone seeking relatives of Mr. Black in 2003
http://boards.ancestry.com/surnames.black/2813/mb.ashx