http://www.cde.state.co.us/stateinfo/
REV Monographs - Colorado Department of Revenue
REV1/30.2/IN2/2002/INTERNET
Colorado statistics of income : individual income tax returns tax year 1999 / prepared by the Office of Tax Analysis, Colorado Department of Revenue.
REV3.2/B96/2004/INTERNET
Colorado passenger vehicle & school bus driver's manual.
REV3.8/D37/INTERNET
Con orgullo presento el manual del conductor. (Colorado driver handbook. Spanish. 2004).
REV13.2/R26/2020/INTERNET
2019 regulated marijuana market update.
REV13.2/SI9/2018/INTERNET
Market Size and Demand for Marijuana in Colorado 2017 Market Update.