He was elected as a Democrat to the Sixty-second Congress from March 4, 1911 to March 3, 1913. He failed reelection in 1912 to the Sixty-third Congress. He was a delegate to the Democratic National Convention in 1912. In 1915, he was appointed postmaster of Worcester, and served until his death.
^Who's who in State Politics, 1912, Boston, MA: Practical Politics, 1912, p. 27
^ abc"John Alden Thayer of Worcester Dead; Postmaster Passes Away in Boston Hospital Third District Elected Him to Congress in 1910 (aged 59)", The Boston Globe, Boston, MA, p. 14, August 1, 1917
^ abWho's who in State Politics, 1912, Boston, MA: Practical Politics, 1912, p. 27
Bibliography
The Boston Globe, John Alden Thayer of Worcester Dead; Postmaster Passes Away in Boston Hospital Third District Elected Him to Congress in 1910 August 1, 1917), p. 14.
Who's who in State Politics, 1912 Practical Politics (1912) p. 27.