As indicated by the caption, this image shows a painting by Sir John Lavery ( 1856-1941) titled "Tea Time in the Gothic Room at Harbor Hill dating to 1927 and showing Clarence Mackay, his son John William Mackay, and his mother, Louise, Mrs. John William Mackay taking tea.
The caption accompanying this photograph reads as follows:
1927: Tea Time in the Gothic Room at Harbor Hill, Sir John Lavery ( 1856-1941). Clarence Mackay, his son John William Mackay, and his mother, Louise, Mrs. John William Mackay take tea. Long a noted society leader in London and Paris, in 1920 Mrs. Mackay moved back to the US. Living with her son, at Harbor Hill, Palm Beach and on East 75th Street, she acted as his hostess and as a chaperon for her grandchildren
An image of the Gothic room circa 1926 has been placed here in the Library.
See Harbor Hill, Clarence Hungerford Mackay's Mansion.