[2] He lived for a time in Washington, D.C., where he was an aide to Congressman Antonio M. Fernández until 1946, when he returned to the office of the New Mexico Attorney General.
[2] In 1948, he entered private practice with the law firm of Seth and Montgomery in Santa Fe, and "became a partner shortly thereafter".
[3] On March 22, 1977, Governor Jerry Apodaca appointed Federici to a seat on the state supreme court vacated by the retirement of Justice LaFel E.
On July 23, 1985, Federici confirmed that he would not seek reelection in 1986, retiring from the court at the end of his term.
[4] On May 8, 1945, coincidentally V-E Day, Federici married Elsie Marie Frizell in Springer, New Mexico, with whom he had two sons and two daughters.