[1] Tupper joined the United States Navy in mid-World War II; he served from September 1944 to March 1946, and was discharged as a Petty Officer Third Class.

[1] He graduated from LaSalle University in 1948, was admitted to the bar in 1949, and began to practice in Boothbay Harbor.

[1] He was appointed United States Commissioner General to the Canadian World Exhibition of 1967.

[1] In 1969, Tupper was appointed president of the States’ Urban Action Center, a non-profit entity created by Nelson Rockefeller to aid state governors with identifying problems unique to cities and crafting solutions.

[1] From 1975 to 1976, Tupper was United States Commissioner on the North East Atlantic Fisheries Commission.

[1] He also authored a set of memoirs based on the notable individuals he met during his life, which was titled Recollections.

[1] In addition to his writing, Tupper lectured at several colleges and universities, and served on a number of government and civic boards and commissions, including the Maine Maritime Academy Board of Trustees, St. Andrews Hospital of Boothbay, Bigelow Laboratory for Ocean Sciences, and the U.S. Civil Rights Advisory Commission.