This directory contains SOI Tax States per the following
URLs:

County-To-County
http://www.irs.gov/taxstats/indtaxstats/article/0,,id=96816,00.html
1983-1984--2006-2007

State-To-State
http://www.irs.gov/taxstats/indtaxstats/article/0,,id=96816,00.html
1988-1989--2006-2007

MSRP: $500.  Your Price: $0.