"General Election". The Portland Gazette. June 6, 1820. p. 1. Retrieved September 2, 2023.
"none". The Portland Gazette. May 29, 1821. p. 2. Retrieved September 2, 2023. The Hon. William D. Williamson President of the Senate upon whom the duties of Governour devolve by the constitution...
"Legislature of Maine". The Portland Gazette. January 4, 1822. p. 2. Retrieved March 3, 2023.
"Legislature of Maine". The Portland Gazette. January 8, 1822. p. 2. Retrieved March 3, 2023.