"Dry Bulk Shipping and the Evolution of Maritime Transport Costs, 1850-2020"
CEPR Discussion Paper 15956/NBER Working Paper 28627. (With Martin Stuermer)

"Urban Mortality and the Repeal of Federal Prohibition"
CEPR Discussion Paper 15510/NBER Working Paper 28181. (With Krishna Pendakur and Hitoshi Shigeoka)

"The Gravitational Constant?"
CEPR Discussion Paper 15326/NBER Working Paper 27094. (With Kevin H. O'Rourke and Alan M. Taylor)

"Trade Blocs and Trade Wars during the Interwar Period"
NBER Working Paper 25830. (With Dennis Novy)

"What Drives Commodity Price Booms and Busts?"
Hong Kong Institute for Monetary Research Working Paper 23/2018. (With Martin Stuermer)

"Trade and Immigration, 1870-2010"
NBER Working Paper 25010. (With John P. Tang)

"Infant Mortality and the Repeal of Federal Prohibition"
NBER Working Paper 23372. (With Krishna Pendakur and Hitoshi Shigeoka)

"Silver Points, Silver Flows, and the Measure of Chinese Financial Integration"
NBER Working Paper 22747. (With Se Yan and Liuyan Zhao)

"Market Potential and Global Growth over the Long Twentieth Century"
NBER Working Paper 22736. (With Dennis Novy)

"From Boom to Bust: A Typology of Real Commodity Prices in the Long Run"
NBER Working Paper 18874. (longer version, dated April 2017)

"Trade, Variety, and Immigration"
NBER Working Paper 17963. (With Chen Bo)

"Defying Gravity: The 1932 Imperial Economic Conference and the Reorientation of Canadian Trade"
NBER Working Paper 17242.

"Foreign Wars, Domestic Markets: England, 1793-1815"
NBER Working Paper 16236.

"Nominal Rigidities and Retail Price Dispersion in Canada over the Twentieth Century"
NBER Working Paper 16098. (With Ross D. Hickey)

"Trade Booms, Trade Busts, and Trade Costs"
NBER Working Paper 15267. (With Christopher M. Meissner and Dennis Novy)

"On the Death of Distance and Borders: Evidence from the Nineteenth Century"
NBER Working Paper 15250.

"Commodity Market Disintegration in the Interwar Period"
NBER Working Paper 14767. (With William Hynes and Kevin H. O'Rourke)

"Commodity Price Volatility and World Market Integration since 1700"
NBER Working Paper 14748. (With Kevin H. O'Rourke and Jeffrey G. Williamson)

"Global Trade and the Maritime Transport Revolution"
NBER Working Paper 14139. (With Krishna Pendakur)

"Trade Costs in the First Wave of Globalization"
NBER Working Paper 12602. (With Christopher M. Meissner and Dennis Novy)

"Stuck on Gold: Real Exchange Rate Volatility and the Rise and Fall of the Gold Standard"
NBER Working Paper 11795. (With Natalia Chernyshoff and Alan M. Taylor)

"Market Integration in the North and Baltic Seas, 1500-1800"
LSE Economic History Working Paper 55/00.