A few State links:

US Census information on states

http://quickfacts.census.gov/qfd/index.html

A repository of basic information on all 50 states

http://www.50states.com/

Which state joined the Union in what order

http://www.infoplease.com/ipa/A0763770.html

First State of the Union address

http://www.law.ou.edu/hist/washsu.html