Washburn, Mabel Thacher Rosemary, Chadwick Ancestry, New York: New York Public Library, 1982. NYPL *ZI-315 R2 #103. Information from this source tagged as [Ref: Washburn CHADWICK p[0-9]*].
Sources for birth and parent Information
parents:
Benjamin CHADWICK & Thankful ___ [Ref: Washburn CHADWICK p31]
Sources with Information about marriage to Sarah GREEN