From Outside Magazine Online, an article about corporate advertising in our parks.
http://www.outsideonline.com/2084586/advertising-national-parks-terrible-idea?utm_source=dispatch&utm_medium=newsletter&utm_campaign=05312016&spMailingID=25601107&spUserID=MjI4NTQ1NDczNjExS0&spJobID=804243795&spReportId=ODA0MjQzNzk1S0