Mellen came to the attention of J. P. Morgan when he drove such a hard bargain with the New York Central that Chauncey Depew complained to Morgan, a director of both the New Haven and the New York Central.
Chauncey Depew | Chauncey Wright | Chauncey Steele III | Depew, New York | Chauncey Thomas, Jr. | Chauncey Thomas | Chauncey Stillman | Chauncey Steele, Jr. | Chauncey Morehouse | Chauncey "Hit-Boy" Hollis | Chauncey Goodrich | Chauncey Billups | Chauncey Bailey | Charles Chauncey Burr |
Its executive committee included Supreme Court Justice David J. Brewer, Spencer Trask, Chauncey Depew, Dr. Leonard Woolsey Bacon, and the Reverend Frederick D. Greene, of New York.
In the U.S. Senate election of 1911, he was the Democratic candidate to succeed Chauncey Depew as U.S. Senator from New York.