"Massachusetts, Town Clerk, Vital and Town Records, 1626-2001," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FHQZ-TMZ : 4 November 2017), Hezekiah Usher and Elizabeth Whittemore, 17 Nov 1768; citing Marriage, Boston, Suffolk, Massachusetts, United States, , town clerk offices, Massachusetts; FHL microfilm 818,093.
"Massachusetts Marriages, 1695-1910," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FCQR-X5T : 4 December 2014), Hezekiah Usher and Elizabeth Whittemore, 17 Nov 1768; citing reference ; FHL microfilm 0896885 IT 2.