Monetary policy and the top one percent: Evidence from a century of modern economic history - M. El Herradi, A. Leroy
https://www.dnb.nl/en/news/dnb-publications/dnb-working-papers/Workingpapers2019/dnb383636.jsp
From the abstract: "The obtained results indicate that expansionary monetary policy strongly increases the share of national income held by the top one percent."