
Sketch of the Peacock Room dates, according to Albert Ludovici, Jr (1852-1932), from 17 December 1898.

Sketch of the Peacock Room, Art Institute of Chicago
It is catalogued in MacDonald 1995 (cat. rais.) [more] (cat. no. 1581).

Sketch of the Peacock Room, Art Institute of Chicago

North-eastern corner of the Peacock Room, Freer Gallery of Art

Sketch of the Peacock Room, Art Institute of Chicago
This is a memory sketch of details from Harmony in Blue and Gold: The Peacock Room y178, which was still in 49 Princes Gate, London.
According to the inscription and heading, it was drawn at Frascati's restaurant, London.

Sketch of the Peacock Room, Art Institute of Chicago

North-eastern corner of the Peacock Room, Freer Gallery of Art
Rough memory sketches of Harmony in Blue and Gold: The Peacock Room y178, done more than twenty years after Whistler had completed it.
The drawing is vigorous, and yet the artist carefully fill in areas of shading to give the peacocks added emphasis. He was apparently not happy about the position of the neck and head of the peacock on the right, and drew it twice.

Sketch of the Peacock Room, Art Institute of Chicago
See further details in Clarke, Jay A., and Sarah Kelly Oehler, eds., Whistler Paintings and Drawings at the Art Institute of Chicago, The Art Institute of Chicago, 2020, website.
The paper is a dark cream, browned, and has darkened within the mount. It was once folded horizontally through the centre.