As indicated by the caption, this color image taken in 1906 shows a painting by John W. Alexander of Katherine Mackay (US1797spouse1) as "Phedre."
The caption accompanying this photograph reads as follows:
1906: Katherine Mackay as "Phedre", by John W. Alexander.
A rendering of the frame designed by Stanford White for the painting by John W. Alexander of Katherine Mackay (US1797spouse1) as "Phedre" also has been placed here in the Library.
See Harbor Hill, Clarence Hungerford Mackay's Mansion.