National Audubon Society

year of pub­li­ca­ti­onISBNauthor(s)title
2007978-0-9787908-0-6Audubon MinnesotaThe North Shore Birding Trail: A Guide to Birding Minnesota's North Shore of Lake Superior from Duluth to Grand Portage
  ''978-0-9787908-1-3National Audubon SocietyThe Minnesota River Valley Birding Trail: A Guide to Great Birding Along the Minnesota River (Audobon Minnesota: An Audobon Birding Guide)
  ''978-0-9787908-2-0National Audubon SocietyThe Great River Birding Trail Guide: A Guide to Birding the Mississippi River from the Headwaters to the Minnesota-Iowa Border (Audubon Field Guide)