The CTPP group LOVES it when someone asks an interesting question.
Today's interesting question is: Where can I get 1980 county-to-county
The answer is:
The 1980 UTPP was NOT a nationwide package, but individual MPOs and
state DOTs contracted with the Census Bureau. Fortunately, BEA had a
special tabulation nationwide for these flows. These are based on the
1980 Census "long form" sample.
FHWA Office of Planning