This directory tree has 1980 data.  Clearly they are MUCH smaller than
the 1990 data sets and that is smaller than the 2000 data sets.  We don't have
an interface to read the datasets online yet, we may never have one.

If you have a problem with the data files, contact thoma041@census.gov.
If you need help with the data itself, contact warren.k.nozick@census.gov.
Please be as descriptive as you can on what you need help on.