Dataset: col_imp.dat Source: S.D. Smith (1998), "The Market for Manufactures in the Thirteen Continental Colonies, 1698-1776", The Economic History Review, Vol. 51, #4, pp676-708. Description: Exports from England to U.S. of cloth, alum, and cards (alum and cards appear to be cloth-making equipment) from 1696-1774. Variables/Columns Year 1-4 Cloth 8-14 /* thousands of pounds in constant prices */ alum 18-21 /* cwt */ cards 25-28 /* dozens of pairs */