"c NBER SERIES: 14112 " "c AREA COVERED: U.S. " "c UNITS: THOUSANDS OF DOLLARS " "c ANNUAL COVERAGE: NONE " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: 01/1867-12/1914 " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE: FOR 1867-1911 DEPARTMENT OF COMMERCE AND LABOR," "c BUREAU OF STATISITCS, MONTHLY SUMMARY OF COMMERCE AND " "c FINANCE, DECEMBER 1911, PP. 1068-1070; FOR 1912-1914: " "c BUREAU OF FOREIGN AND DOMESTIC COMMERCE, MONTHLY " "c SUMMARY OF FOREIGN COMMERCE, DECEMBER 1914, P.514. " "c " "c CHECKED MANUALLY; CORRECTED 4/23/94. " "c "