Many series are highly disaggregated, and many exist at the monthly or quarterly frequency.
The data set has some coverage of the United Kingdom, France and Germany, although it predominantly covers the United States. For information see Improving the Accessibility of the NBER's Historical Data , by Daniel Feenberg and Jeff Miron. An analytical index of the NBER database was kept in hard copy form. In some respects it is more informative than the online index, but it is available as a 9-megabyte .PDF file only. It lists a few series that are not available here, and misses a few that are.