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Through the Mist and Spray, Part 1: The High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
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Essay in Whites and Grays: Birch Polypore (Fomitopsis betulina) on a Paper Birch (Betula papyrifera), Kitchi Gammi Park, Duluth, Minnesota, USA
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The Tree as a Starting Point in Integrative Natural History: Jack Pine (Pinus banksiana) on the Magnetic Rock Trail, Superior National Forest, Minnesota, USA
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Elegant Sunburst Lichen (Xanthoria elegans), Part 2: Gooseberry Falls State Park, Minnesota, USA
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Elegant Sunburst Lichen (Xanthoria elegans), Part 1: Gooseberry Falls State Park, Minnesota, USA
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Banded Iron Formation (BIF) of the Soudan Iron Formation, Lake Vermilion-Soudan Underground Mine State Park, Minnesota, USA
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Frosted Rocktripe (Umbilicaria americana) and Other Lichen Species, Mount Rose, Grand Portage National Monument, Minnesota, USA
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Bunchberry (Cornus canadensis) and Developing Fronds of Northern Oak Fern (Gymnocarpium dryopteris), Gooseberry Falls State Park, Minnesota, USA
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One of Our Planet's Most Successful Inhabitants | Mount Rose, Grand Portage National Monument, Minnesota, USA
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The Brownstone Chronicles, Part 13: Historic Old Central High School, Duluth, Minnesota, USA (1892)
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Roots in Ancient Lava: A Stand of Arbor Vitae (Thuja occidentalis) Growing on Basalt, Gooseberry Falls State Park, Minnesota, USA
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Father of the Waters, Part 1: Fons Sum et Origo; the Source of the Mississippi River, Itasca State Park, Minnesota, USA
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Interrupted Fern (Claytosmunda claytoniana), Gooseberry Falls State Park, Minnesota, USAFalls
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Through the Mist and Spray, Part 2: The High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
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Through the Mist and Spray, Part 3: A Closer Look at the High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
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Through the Mist and Spray, Part 4: A Last Look at the High Falls of the Pigeon River, Grand Portage State Park, Minnesota, USA
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Through the Mist and Spray, Part 5: The Broadening of the Pigeon River Downstream from the High Falls, Grand Portage State Park, Minnesota, USA
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Through the Mist and Spray, Part 6: Another Look at the Broadening of the Pigeon River Downstream from the High Falls, Grand Portage State Park, Minnesota, USA
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Through the Mist and Spray, Part 7: Soil Profile and Glacial Till along the High Falls trail, Grand Portage State Park, Minnesota, USA
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Famous Pillow Lavas, Part 6: And a Close-up of the Boulder's Other Side, Ely, Minnesota, USA
