Portrait of Henry Harrison may have been started in 1859, but not necessarily ever completed.

In a letter from Paris in 1859 to his half-sister Deborah Delano Haden (1825-1908) Whistler wrote,

'I'm working hard and my stay in London with you and Seymour has done me an immense good in "my art" - I have seen Henry Harrison and have begun his portrait which I hope to finish when he returns from England where he has gone for a few days - I have prepared sketches for two pictures and have drawn one of them in on the canvass [sic], all from Nature tell Seymour.' 1

'Seymour' was Francis Seymour Haden, Sr (1818-1910). There is no further reference to the portrait.