"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XFJ3-BYD : 17 October 2017), Thomas Derby and Laura Ann Whitney, 21 Apr 1841, Marriage; State Capitol Building, Montpelier; FHL microfilm 27,530.
"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/V898-6Y1 : 4 November 2017), Thomas Derby and Laura Ann Whitney, 21 Apr 1841, Marriage; State Capitol Building, Montpelier; FHL microfilm 27,730.
"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/V898-6YY : 4 November 2017), Thomas Derby and Laura Ann Whitney, 01 Apr 1841, Marriage; State Capitol Building, Montpelier; FHL microfilm 27,730.
"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XFJ3-BYX : 17 October 2017), Thomas Derby and Laura Ann Whitney, 01 Apr 1841, Marriage; State Capitol Building, Montpelier; FHL microfilm 27,530.