[3] From 1929 to 1934, Amidon owned and operated a store in Barnet, Vermont, with his brothers, Perley and Theodore.
[14] Amidon served as a consultant to Hincks for six months after the end of his term in order to help with the transition.
[16] Amidon served as a trustee of Vermont Junior College (later the Vermont College of Fine Arts) beginning in 1955, and in 1956 he was elected to the board of directors of the Montpelier National Bank and Chairman of the Board of Trustees of Montpelier's Bethany Congregational Church.
[17] He also served as treasurer of the Vermont Division of the American Cancer Society and of the Calvin Coolidge Memorial Foundation.
[22] Despite an effort by the Republican party to persuade him to run, in 1966 he declined to be a candidate for Lieutenant Governor of Vermont.
[22] Amidon died at the hospital in Berlin, Vermont, on November 28, 1976, after suffering a heart attack at his home in Montpelier.