Roberts, Gary Boyd, Ancestors of American Presidents, First Authoritative Edition. Santa Clarita, CA: Carl Boyer, 1995. Information from this source tagged as [Ref: Roberts USPres [A-Zp][A-Z0-9]*].
Sources for birth and parent Information
date:
[Ref: Roberts USPres COOLIDGE],
parents:
[Ref: Roberts USPres p197]
Sources with Information about marriage to John PARKMAN
date:
[Ref: Roberts USPres COOLIDGE],
child:
[Ref: Roberts USPres COOLIDGE, Roberts USPres p197]