Eleanor Platt was one of the foremost classical American sculptors of the 20th Century. Her works are installed in the Metropolitan Museum of Art, the National Portrait Gallery, the Hall of Great Americans at New York University, the United States Supreme Court, Harvard University, Cal Tech, and many other museums, universities, government buildings, and private collections throughout the country. Eleanor was a portraitist, sculpting busts, reliefs, and commemorative medals of many important historical figures of the 19th and 20th centuries. Her works included many prominent legal, scientific, and intellectual leaders . Throughout her prolific career she sculpted over 30 busts, 16 reliefs, and 32 medals, many of which were reproduced for museums, institutions, and private collectors. She also served in several important positions within the arts community.

Sculpting was Eleanor's primary career. In her early years she supplimented her income with other employment but eventually made a fully independent living from her art. This was especially impressive considering she graduated from art school amid the Great Depression and developed her career in an era when single women were rarely professionally self-employed. She quickly made a name for herself with her early works of Justice Learned Hand, artist John Flanagan, and artist Arthur Lee. Her career spanned almost five decades and included occasional teaching, education, travel, and lectures.