rwgabbro1: The Geology of Terra-Cotta, Part 6: Detail of the Facade, Krause Music Store, Ravenswood Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: The Geology of Terra-Cotta, Part 1: Railway Exchange Building, the Loop, Chicago, Illinois, USA (1904)
rwgabbro1: The Geology of Terra-Cotta, Part 8: Detail of the George Watts & Son Building, Juneautown Neighborhood, Milwaukee, Wisconsin, USA (1925)
rwgabbro1: Daphni Monastery, Chaidari, Greece (ca. 1080 AD; also earlier and later sections), Part 4
rwgabbro1: The Geology of Terra-Cotta, Part 4: A Tale of Two TCs; Cudahy Tower, Milwaukee, Wisconsin, USA (southern section, 1909; northern tower section, 1925)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 7: San Millán Church (12th Century AD)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 9: San Millán Church (12th Century AD)
rwgabbro1: A Miracle in Stone, Brick, and Ceramics, Part 4: The İznik-Istanbul Connection, Sultan Ahmed Mosque ("Blue Mosque"), Istanbul, Turkey (AD 1616)
rwgabbro1: A Miracle in Stone, Brick, and Ceramics, Part 6: Interior Decoration of a Subsidiary Full Dome, Sultan Ahmed Mosque ("Blue Mosque"), Istanbul, Turkey (AD 1616)
rwgabbro1: A Miracle in Stone, Brick, and Ceramics, Part 7: Music of the Spheres, Sultan Ahmed Mosque ("Blue Mosque"), Istanbul, Turkey (AD 1616)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 13: San Esteban Church (13th Century AD)
rwgabbro1: A Miracle in Stone, Brick, and Ceramics, Part 8: One Last Look at the Sultan Ahmed Mosque ("Blue Mosque"), Istanbul, Turkey (AD 1616)
rwgabbro1: The Geology of Terra-Cotta, Part 2: Detail of the Interior of the Railway Exchange Building, the Loop, Chicago, Illinois, USA (1904)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 16: San Martín Church (12th Century AD)
rwgabbro1: The Geology of Terra-Cotta, Part 3: Close-Up of the Exterior of the Railway Exchange Building, the Loop, Chicago, Illinois, USA (1904)
rwgabbro1: Architectural Geology of Byzantine Athens, Part 2: Holy Apostles Church, the Agora (ca. late 10th century AD)
rwgabbro1: Architectural Geology of Byzantine Athens, Part 1: Holy Apostles Church, the Agora (ca. late 10th century AD)
rwgabbro1: The Geology of Terra-Cotta, Part 5: The Facade, Krause Music Store, Ravenswood Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: Architectural Geology of Byzantine Athens, Part 3: Holy Apostles Church, the Agora (ca. late 10th century AD)
rwgabbro1: The Geology of Terra-Cotta, Part 7: The George Watts & Son Building, Juneautown Neighborhood, Milwaukee, Wisconsin, USA (1925)
rwgabbro1: Architectural Geology of Byzantine Athens, Part 4: Sts. Theodores Church (ca. mid-11th century AD)
rwgabbro1: The Geology of Terra-Cotta, Part 9: Close-Up of the George Watts & Son Building, Juneautown Neighborhood, Milwaukee, Wisconsin, USA (1925)
rwgabbro1: The Geology of Terra-Cotta, Part 10: The Reebie Storage Warehouse, Lincoln Park Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: Architectural Geology of Segovia, Spain, Part 21: San Juan de los Caballeros Church (late 11th Century AD)
rwgabbro1: The Geology of Terra-Cotta, Part 11: Closing in on the Reebie Storage Warehouse, Lincoln Park Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: Milwaukee in Stone and Clay: A Guide to the Cream City's Architectural Geology (NIU Imprint of Cornell University Press)
rwgabbro1: Architectural Geology of Byzantine Athens, Part 7: Incorporeal Angels Church (late 11th century AD, with subsequent rebuilding and restoration)
rwgabbro1: The Geology of Terra-Cotta, Part 12: Still Closing in on the Reebie Storage Warehouse, Lincoln Park Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: The Geology of Terra-Cotta, Part 13: Detail of the Lower Facade, Reebie Storage Warehouse, Lincoln Park Neighborhood, Chicago, Illinois, USA (1922)
rwgabbro1: A Geology Guidebook Author's Dream Come True . . .