In the century after the Civil War, roughly two-thirds of U.S. dutiable imports were subject to specific duties whose ad valorem equivalent was inversely related to the price level. This paper finds that import price fluctuations easily dominate commercial policies (changes in rates of import...

In the century after the Civil War, roughly two-thirds of U.S. dutiable imports were subject to specific duties whose ad valorem equivalent was inversely related to the price level. This paper finds that import price fluctuations easily dominate commercial policies (changes in rates of import...

"Do prices respond to macro shocks? Does the mere presence of international frontiers hinder trade? We revisit these questions by studying a dataset of online book prices for a number of US and Canadian retailers. We believe our dataset is well suited to this task for a number of reasons: (1)...