1040 Fifth Avenue

1040 Fifth Avenue (informally known as the 10 40) is a luxury residential housing cooperative in the Upper East Side of Manhattan, New York City.
1040 is one of the tallest of the limestone-clad apartment houses on Fifth Avenue. 
The building was erected in 1930 and was designed by Rosario Candela.
In addition to Jackie Kennedy, Generoso Pope was the second notable resident who lived in the apartment building.