Data Are For Net Tons Of 100 Cubic Feet, Excluding Engine Space, Crew Space, Etc. Data Are For Vessels Cleared In Foreign Trade And Does Not Include The Domestic Trade Between Alaska, Hawaii, Puerto Rico, Guam, Samoa, And The U.S. Data Through June 1906 Were Computed By Adding "Sailing" And "Steam". The Monthly Summary Of Foreign Commerce Changed Titles Throughout The Span Of This Variable. For 1893-1894 It Was Called The Summary Statement Of Imports And Exports; For 1895, Finance, Commerce, And Navigation; For 1896-June 1898, Monthly Summary Of Finance And Commerce; For July 1898-June 1914, Monthly Summary Of Commerce And Finance; For July 1914-1934, Monthly Summary Of Foreign Commerce. Source: Data For 1894-May 1934: Monthly Summary Of Foreign Commerce. Data For June 1934-1941: U.S. Department Of Commerce, Survey Of Current Business, Successive Issues.
This NBER data series m03022 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.
NBER Indicator: m03022
Release: NBER Macrohistory Database
National Bureau of Economic Research, Vessels Cleared In Foreign Trade for United States [M03022USM583NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M03022USM583NNBR/, July 4, 2015.