Cindy:
Have you tried the Census Block Equivalency files. The three tables
provide the one-to-one, one-to-many, and many-to-many relationships
between 1990 to 2000 blocks. Not to say that it is easy, I would be
interested in a simple set of instructions to show in a thematic map the
pop changes.
Kevin Ghirardi, MPO Administrator
South Central Planning & Development Commission
5058 W. Main Street
Houma, Louisiana 70360
985-851-2900
ghirardi(a)scpdc.org <mailto:ghirardi@scpdc.org>