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Geology of Minnesota's North Shore, Part 1: The View from Enger Tower, Enger Park, Duluth
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Chicago in Stone and Clay: A Guide to the Windy City's Architectural Geology (NIU Imprint of Cornell University Press)
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Milwaukee in Stone and Clay: A Guide to the Cream City's Architectural Geology (NIU Imprint of Cornell University Press)
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The Brownstone Chronicles, Part 1: Detail of John Howland Thompson House, Chicago, Illinois, USA (1888)
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The Brownstone Chronicles, Part 2: Overall View of the John Howland Thompson House, River North Neighborhood, Chicago, Illinois, USA (1888)
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The Brownstone Chronicles, Part 3: Close-up of the Rock-faced Ashlar, John Howland Thompson House, River North Neighborhood, Chicago, Illinois, USA (1888)
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The Brownstone Chronicles, Part 17: Overall View of St. Paul's Episcopal Church, Yankee Hill Neighborhood, Milwaukee, Wisconsin, USA (1893)
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The Brownstone Chronicles, Part 13: Historic Old Central High School, Duluth, Minnesota, USA (1892)
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The Brownstone Chronicles, Part 18: Detail of the Main Entrance, St. Paul's Episcopal Church, Yankee Hill Neighborhood, Milwaukee, Wisconsin, USA (1893)
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The Brownstone Chronicles, Part 14: Detail of an Old Copper-Mine Building, Quincy Mine Hoist Historic Site, Hancock, Michigan, USA
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The Brownstone Chronicles, Part 15: Close-Up of an Old Copper-Mine Building, Quincy Mine Hoist Historic Site, Hancock, Michigan, USA
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The Brownstone Chronicles, Part 16: This Is Getting Unhealthily Obsessive; Another Close-Up of an Old Copper-Mine Building, Quincy Mine Hoist Historic Site, Hancock, Michigan, USA
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A Symphony of Geologic Materials, Part 1: Overall View of the Charles Gates Dawes House, Evanston, Illinois, USA (1894)
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A Symphony of Geologic Materials, Part 2: Detail of the Western Elevation, the Charles Gates Dawes House, Evanston, Illinois, USA (1894)
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Geobrickology, Part 5: Detail of the Milwaukee Club, Juneautown Neighborhood, Milwaukee, Wisconsin, USA (1883)
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The Brownstone Chronicles, Part 19: Detail of the Western Elevation, St. Paul's Episcopal Church, Yankee Hill Neighborhood, Milwaukee, Wisconsin, USA (1893)
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The Brownstone Chronicles, Part 20: Detail of the Northwestern Turret, St. Paul's Episcopal Church, Yankee Hill Neighborhood, Milwaukee, Wisconsin, USA (1893)
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The Brownstone Chronicles, Part 21: Old City Hall, Marquette, Upper Peninsula of Michigan, USA (1894)
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The Brownstone Chronicles, Part 22: Detail of Old City Hall, Marquette, Upper Peninsula of Michigan, USA (1894)
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The Brownstone Chronicles, Part 23: Detail of the Lower Central Façade, Old City Hall, Marquette, Upper Peninsula of Michigan, USA (1894)
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The Brownstone Chronicles, Part 24: Close-Up of the Central Façade, Old City Hall, Marquette, Upper Peninsula of Michigan, USA (1894)
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The Brownstone Chronicles, Part 26: Another Overall View of Hotchkiss Hall, Lake Forest College, Lake Forest, Illinois, USA (1891)
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The Brownstone Chronicles, Part 25: Hotchkiss Hall, Lake Forest College, Lake Forest, Illinois, USA (1891)
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Top-Drawer Tudorranean: The George N. Wiswell House, Northpoint Neighborhood, Milwaukee, Wisconsin, USA (1896)
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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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Roots in Ancient Lava: A Stand of Arbor Vitae (Thuja occidentalis) Growing on Basalt, Gooseberry Falls 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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Architectural Geology of the Minnesota, Part 1: Enger Tower, Enger Park, Duluth (1939; renovated 2011)
