* {{Surname|Blockson}}, Charles L. and Ron Fry. [http://clevnet.bibliocommons.com/search?custom_query=(title%3A(Black+Genealogy)+AND+contributor%3A(Blockson)) Black Genealogy.] Baltimore: Black Classic Press, 1991. | * {{Surname|Blockson}}, Charles L. and Ron Fry. [http://clevnet.bibliocommons.com/search?custom_query=(title%3A(Black+Genealogy)+AND+contributor%3A(Blockson)) Black Genealogy.] Baltimore: Black Classic Press, 1991. |