Edward S. Harkness House -... en.wikipedia.org

An Inside Look at NYC's... untappedcities.com

Daytonian in Manhattan: The... daytoninmanhattan.blogspot....

An Inside Look at NYC's... untappedcities.com

Nathaniel L. McCready House... en.wikipedia.org

Big Old Houses: Very Rich,... www.newyorksocialdiary.com

Big Old Houses: Very Rich,... www.newyorksocialdiary.com

Daytonian in Manhattan: The... daytoninmanhattan.blogspot....

An Inside Look at NYC's... untappedcities.com

Harkness House |... www.commonwealthfund.org

Big Old Houses: Very Rich,... www.newyorksocialdiary.com

The Gilded Age Mansions of... untappedcities.com

The History of the... www.citysignal.com

Big Old Houses: Very Rich,... www.newyorksocialdiary.com

Daytonian in Manhattan: The... daytoninmanhattan.blogspot....

Harkness House |... therealdeal.com

Big Deal: Sold in N.Y.C.... archive.nytimes.com

Harkness House |... www.commonwealthfund.org

An Inside Look at NYC's... untappedcities.com

Daytonian in Manhattan: The... daytoninmanhattan.blogspot....