Autoworld Trade-In Pricing Reports

http://www.autoworld.com/scripts/enterzip.asp?autowrld

Virginia Department of Motor Vehicles

http://www.dmv.state.va.us/

Edmonds Used Car Pricing

http://www.edmunds.com/used/

IRS Publication 4303 A Donor's Guide to Car Donations

http://www.irs.gov/pub/irs-pdf/p4303.pdf

Kelley Blue Book - Used Car Bluebook Values and New Car Pricing

http://www.kbb.com/

NADA Auto Guide - New and Used Car Prices, Car Buying Guide

http://www.nadaguides.com/