A reproachful letter from Whistler to his son.
Charles James Whistler Hanson (1870–1935) was Whistler's illegitimate son with parlor maid Louisa Fanny Hanson. The boy was raised by Whistler's Irish muse and mistress Joanna Heffernan and supported by the painter and his brother. Whistler was known to be harsh and strict with the young man, as this letter demonstrates. "The fact of your asking my opinion, is, I am pleased to believe, a proof of your being uneasy in your mind. It is scarcely necessary for me to point out that you could hardly be guilty of a greater offence to Capt. McEvoy than by appropriating in this way one of his ideas
and rendering it useless to himself
by 'improving' upon it, and patenting, under his very nose, your
version of it!"
The letter to Miss Rubell concerns changing the date for their appointment.