Portrait of a Young Girl dates from 1876. 1
On 10 April 1876 the New York Herald recorded among Whistler's current works, 'the full sized portrait of a charming young girl, with hat resting coquettishly on one side of her head.' 2
Notes:
1: YMSM 1980 [more] (cat. no. 176).
2: 'American Artists in London, What they have done for Philadelphia', New York Herald, New York, 10 April 1876, p. 5. Press cutting in GUL Whistler PC 2, p. 2.