Hammer Galleries, New York.
Private collection, Locust Valley, New York, acquired from the above.
By descent to the present owner.
Please note the additional exhibition history and literature on this lot:
New York, Hammer Galleries, Martha Walter: Recent Paintings, October 21-November 1, 1969, no. 32.
Hammer Galleries, Martha Walter: RecentPaintings, exhibition catalogue, New York, 1969, no. 32, illustrated.