Hansen's 1941 book, Fiscal Policy and Business Cycles, was the first major work in the United States to entirely support Keynes's analysis of the causes of the Great Depression.
Hansens bog fra 1941, Fiscal Policy and Business Cycles, var det første større værk i De Forenede Stater, som fuldstændigt bakkede op om Keynes' analyser af årsagerne til Depressionen.