State	Year	How law was passed	Contact information
Alaska	1998	Voter referendum	http://www.hss.state.ak.us/dph/bvs/marijuana.htm
California	1996	Voter referendum	http://www.cdph.ca.gov/programs/MMP/Pages/Medical%20Marijuana%20Program.aspx
Colorado	2000	Voter referendum	http://www.cdphe.state.co.us/hs/medicalmarijuana/fullpacket.pdf
Hawaii	2000	Legislative vote	http://www.dpfhi.org
Maine	1999	Voter referendum	http://www.mainecommonsense.org
Michigan	2008	Voter referendum	http://michigan.gov/mmp
Montana	2004	Voter referendum	http://www.dphhs.mt.gov/medicalmarijuana
Nevada	2000	Voter referendum	http://health.nv.gov/MedicalMarijuana.htm
New Mexico	2007	Legislative vote	http://www.health.state.nm.us/marijuana.html
Oregon	1998	Voter referendum	http://egov.oregon.gov/DHS/ph/ommp/index.shtml
Rhode Island	2006	Legislative vote	http://www.health.state.ri.us/hsr/mmp/index.php
Vermont	2004	Legislative vote	http://www.safeaccessnow.org/article.php?id=2012
Washington	1998	Voter referendum	http://www.doh.wa.gov/hsqa/medical-marijuana