Natural Resources Natural Resources Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Friends of the Lake Superior National Estuarine Research Reserve _ 14 Marina DriveSuperior, WI 54880 (715) 399-4095 Learn More | Visit Site UMD Large Lakes Observatory _ 2205 E 5th Street Duluth, MN 55812 (218) 726-7926 Learn More UMD Natural Resources Research Institute _ 5013 Miller Trunk HighwayDuluth, MN 55811 1442(218) 720-4297 Learn More If your business isn't here, contact us today to get listed!