
Studies of a woman's head and a cylindrical object probably dates from 1897. It was drawn on the verso of a letter from Philippa Maude Philip (1865-1915) to Whistler on 1 January 1897. 1

Studies of a woman's head and a cylindrical object, Glasgow University Library
It was catalogued in MacDonald 1995 (cat. rais.) [more] (cat. no. 1520).

Studies of a woman's head and a cylindrical object, Glasgow University Library

Studies of a woman's head and a cylindrical object, Glasgow University Library
Not identified but probably one of the Birnie Philip sisters.

Studies of a woman's head and a cylindrical object, Glasgow University Library
This looks like an exercise in shading and cross-hatching. The technique is not like that of Whistler, although it is just possible it was by him, demonstrating techniques to someone else.
The letter was folded and the note and sketches are sideways on to the letter.
It has not been exhibited.
1: [1 January 1897], GUW #13483.