This vintage ad cover from 1887 features the 5th Avenue Madison Square Hotel and is written by Amos F. Eno. The cover is a piece of history, showcasing the stunning architecture and charm of the hotel. It is a great addition to any collection of postal history or vintage advertising. The cover is uncertified and has been well-preserved, making it a unique and valuable find for collectors.

The Fifth Avenue Hotel was a luxury hotel located in Manhattan, New York City from 1859 to 1908. It had an entire block of frontage between 23rd Street and 24th Street, at the southwest corner of Madison Square

Amos F. Eno (1836-1915), was born June 13, 1836, son of Amos Richards Eno (1810-1898) and Lucy Jane Phelps Eno (1818-1913).

The Eno family is a Colonial American family and one of the families that can trace their lineage to Richard Warren on the Mayflower.

Amos F. Eno was a New York tycoon, one of New York City's Washington Square millionaires, heir to the family fortune of about $40 Million.

Amos Eno never married and left his estate in its entirety to Columbia University. The will was contested in the probate courts for seven years concluded June 21, 1922.

The coin collection is assumed to have become property of Columbia University.

During the Civil War his uncle John S. Phelps was appointed governor of Kansas, and Amos F. Eno, was his Secretary. These offices were abolished in July 1863.