Emily's parents commissioned the architectural firm of Carrère and Hastings to design a mansion for the couple at 9 East 91st, on land purchased from Andrew Carnegie; it was known as the John Henry Hammond House.
The house has since been restored and is now the Consulate General of the Russian Federation.

The reception rooms on the second floor – a ballroom, library and music room – routinely sat three hundred guests, at concerts often featuring Vanderbilt Sloane on piano, and her son John Hammond, Jr. playing violin or viola.
Many greats of jazz played in the house, including Benny Goodman Rachel Hammond Breck noted that her mother's parties never went for long, mainly due to her refusal to serve alcohol.
Emily's parents commissioned the architectural firm of Carrère and Hastings to design a mansion for the couple at 9 East 91st, on land purchased from Andrew Carnegie; it was known as the John Henry Hammond House. The house has since been restored and is now the Consulate General of the Russian Federation.
The reception rooms on the second floor – a ballroom, library and music room – routinely sat three hundred guests, at concerts often featuring Vanderbilt Sloane on piano, and her son John Hammond, Jr. playing violin or viola. Many greats of jazz played in the house, including Benny Goodman Rachel Hammond Breck noted that her mother's parties never went for long, mainly due to her refusal to serve alcohol.
Emily Vanderbilt Sloane