Encyclopedia of World Trade : from Ancient Times to the PresentCynthia Clark Northrup, Jerry H. Bentley, Eckes, Alfred E., Jr., Patrick Manning, Kenneth Pomeranz · First published 2015Open the Tome
The American economyCynthia L. Clark Northrup · First published 2003 · Latest edition 2011Open the Tome
Encyclopedia of tariffs and trade in U.S. historyCynthia Clark Northrup, Elaine C. Prange Turney · First published 2003Open the Tome
