"Massachusetts State Vital Records, 1841-1920," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:23RZ-DNV : 22 October 2019), Agnes C Mccallum in entry for Agnes Catherine Beatty, 05 Jan 1920; citing Birth, Boston, Suffolk, Massachusetts, United States, certificate number 132, page 4, State Archives, Boston.