I use this website in order to find historical data on median home prices and home inventory. I thought I would pass it along… 
http://www.benengebreth.org/housingtracker/
Corey
I’ve been enjoying this site for the past year or so. One thing worth mentioning is that this tracks ASKING prices only, not historical sales prices. Still, it’s a great tool for identifying general trends in local markets.
FYI they are changing their URL to www.housingtracker.net sometime soon.
Jeff