Eleanor Kellogg Peck was born on 4 July 1908 in Brookline, Massachusetts, the eldest daughter of John H. and Mary (Kellogg) Peck. Raised in Montclair, New Jersey, Peck graduated with an A.B. from Wellesey College in 1930 and attended the Columbia University College of Physicians until graduating in 1934. Her intership was spent in Bellevue Hospital in New York, and she was affilitated with Vassar and St. Francis hospitals before going to England with the American Red Cross.

Peck began serving as a volunteer physician with the American Red Cross at the Hospital for Sick Children on Great Ormond Street in London in 1941. In 1944, Peck was assigned as a contract surgeon to the Office of the Surgeon for the U.S. Army's Eighth Air Force. According to an excerpt from the book "Women Doctors at War" her duties included making recommendations on WAC (Women's Army Corps) problems, setting up medical care for women in the Eighth Air Force, visiting WAC installations, and carrying out monthly physicals.

The Army wouldn't grant Peck a commission until 10 February 1944, beginning with the rank of 2nd Lietenant. She spent the remainder of the war serving in the Army, and had been promoted to Captain before her discharge. In 1946, Peck moved to Poughkeepsie, New York, where she returned to private practice. During her civilian medical career, she served on community boards such as the Astor Child Guidance Center, United Way, and conducted regular well-baby clinics in Poughkeepsie. In 1979, she was named "Woman of the Year" by the Poughkeepsie chapter of the American Association of University Women (AAUW). She died 30 May 1996, in South Thomaston, Maine, at age eighty-seven.

Note written by Eleanor Peck, Judith Bellafaire, and Mercedes Hererra Graf.