This is an image of number 3 East Seventy fifth Street in New York City where Clarence Mackay would stay as his city house beginning in 1920 until his death seventeen years latter.
Built in 1904, number 3 East Seventy fifth Street was designed by C. P. H. Gilbert for John Duncan, the importer of Lea & Perrin's Worcestershire Sauce. Soon after April, in 1920 negotiations were finalized to sell the house to Clarence for $750,000.
See Harbor Hill, Clarence Hungerford Mackay's Mansion.