[2] On August 9, 1917, he enlisted in the United States Army and rose through the ranks to second lieutenant in the Quartermaster Corps.

[2] Healey was elected as a Democrat to an open seat for Massachusetts's 8th congressional district beginning with the 73rd United States Congress, taking office on March 4, 1933.

His name was attached to one significant piece of New Deal legislation, the 1936 Walsh–Healey Act, which regulated hours and working conditions for employees working on government contracts.

[3] In 1938, he became one of the initial members of the newly created House Un-American Activities Committee.

[1] President Franklin D. Roosevelt nominated Healey on December 1, 1941, to the seat on that court which had been vacated by Judge Elisha Hume Brewster.