FYI - Just noticed this on the FAA website. It's the minimum vectoring and minimum IFR altitude charts (in pdf files). I wasn't aware the FAA was publishing this info, but here it is. For all I know, this might be old news to POA members but it's news to me. Not that I can use them for navigation, but interesting information none the less.
http://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/mva_mia/
http://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/mva_mia/