In the edition of 9 individual impressions with hand additions, each is designated by the artist as a "study." (Usually in this catalogue, the term “study” describes photocopies and tracings that were used in the process of developing a composition.)
A separate edition of this composition was published as part of an illustrated book titled, "One's Sleep." The illustrated book includes 18 plates with hand additions. (See Evolving Composition Diagram.)
The sheet for this composition has been trimmed down to the plate mark and mounted on a board.
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