- 1948, achat du musée
- Museum's website, 30 April 2010
- 1962 Ann Arbor
A handbook of the collections of The University of Michigan Museum of Art, Ann Arbor, 1962, no. 52, 52a, repr.
Museum's website, 30 April 2010:
An example of Jean (Hans) Arp's interest in biomorphic abstraction. In its attention to basic, generic biomorphic shapes the piece is a kind of study of primordial organic forms, forms suggestive of all manner of life but not representing anything specifically.