First edition. An interesting study that identifies Simmel as a predecessor to the Chicago School, and acts as a tribute from this ‘new school’ to Simmel, whom Spykman credits with the formulation of a separate branch of scientific sociology based on ‘group unity’, i.e. the collective interaction of individuals.

Provenance: Leona Fassett appears to have been a translator of French and German, and she is mentioned by Spykman in the acknowledgments: ‘In the revision of the manuscript I have received the valuable advice and criticism of a number of friends; in particular Miss Lola Jean Simpson and Miss Leona Fassett’. She married the German-American art historian Eugen Neuhaus in 1944.