Opium export data for New York Chamber of Commerce 1870-1912

Opium export data for the New York Chamber of Commerce from 1870 through 1912. Includes exports from the Port of New York and an aggregate from all other US ports by year. Source: World-Historical Dataverse, 2010, "Replication data for: Opium Import, Export, and Price Data for New York Chamber of Commerce 1870 _ 1918", http://hdl.handle.net/1902.1/15300 World-Historical Dataverse [Distributor] V1 [Version]