Source: U.S. Bureau Of The Census, Current Industrial Reports, Series M4-A, "Manufacturers' Export Sales And Orders Of Durable Goods,1963-1968, " August 21, 1968; Monthly Releases Of Series M4-A Thereafter; See M4-A Of June 1968 For The Revision Of July 1965.
This NBER data series m06113 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06113
Release: NBER Macrohistory Database
National Bureau of Economic Research, Manufacturers' New Orders For Exports of Durable Goods Excluding Motor Vehicles and Parts for United States [M06113USM144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M06113USM144NNBR/, July 31, 2015.