New inn's owners going for 'deep green', Baltimoresun.com, 12/09/09

State urges tourism industry to be green, HometownAnnapolis.com, 11/15/09

Maryland Greenhawks Schedule Press Conference, gogreenhawks.com, 11/10/09

Maryland Launches Green Travel Program, Appalachian Independent, 11/07/09

Maryland goes after 'green' travelers with new marketing push, Baltimore Business Journal, 11/05/09

Maryland Launches Green Travel Program, Maryland Office of Tourism, 11/05/09

Maryland Launches Green Travel Program, Green Lodging News, 11/03/09

Governor O'Malley Announces Launch of 'Going Green Downtown' Guide, DHCD, 10/26/09

AAA Launches Program to Identify Green Hotels, AAA Newsroom, 10/02/09

O'Malley praises Coca-Cola, state 'Green Registry', baltimoresun.com, 10/01/09

Governor O'Malley Highlights Maryland Businesses Committed to Sustainability, MDE, 09/30/09

Schools going green big-time, baltimoresun.com, 09/07/09

Maryland Tourism Council Members Spruce UP Patapsco Valley State Park, Maryland Tourism Council, 05/15/09