This article presents an analysis of the libertarian collectivizations created during the Spanish civil war (1936–1939). The examination of this historical experience is relevant to social psychology, industrial psychology, and political psychology. The structure, organization, and internal functioning of the collectivizations are described and an explanation is given to account why this collectivistic movement is widely ignored in the literature. Some possible implications of this anarchist experience both for the current organization of industry and society as well as for research on the individualism-collectivism dimension are suggested.