Genealogical Proof Standard  http://www.bcgcertification.org/resources/standard.html

Findagrave.com http://findagrave.com/

Familysearch.org Wiki: https://familysearch.org/wiki/en/Main_Page

Linkpendium: http://www.linkpendium.com/

Accessgenealogy: https://www.accessgenealogy.com/

ProQuest Libguide for HeritageQuest Census Records: http://proquest.libguides.com/heritagequestonline/census