"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDQZ-THC : 12 April 2016), Minnie F Derby in household of Francis Derby, Massachusetts, United States; citing p. 261, family 2211, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,151.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MH6J-72M : 8 September 2017), Minnie F Derby in entry for Francis Derby, 1880; citing enumeration district ED 257, sheet 192D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 0533; FHL microfilm 1,254,533.
"Massachusetts Deaths, 1841-1915," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:NWMY-WB8 : 22 May 2019), Minnie F Derby, 27 Sep 1884; citing West Boylston, Massachusetts, v 357 p 471, State Archives, Boston; FHL microfilm 960,227.
Find A Grave, database and images (https://www.findagrave.com : accessed 25 May 2019), memorial page for Minnie Frances Derby (22 Apr 1860–27 Sep 1884), Find A Grave: Memorial #143150602, citing Mount Vernon Cemetery, West Boylston, Worcester County, Massachusetts, USA ; Maintained by Linda Hiross (contributor 47490909) .