Construction of the Indianapolis Motor Speedway. Nicknamed the "Brickyard", the track was constructed using bricks manufactured by the Murphysboro Paving Brick Company.
Pedro Miguel Locks under construction at the Panama Canal, color photo, scanned by Infrogmation from copyright expired book "The Story of the Panama Canal", 1913.
Galena & calcite on fluorite, 61 x 40 x 36 mm., Rosiclaire Level of the Denton Mine in southern Illinois. Probably collected in the early 1980's (according to Ross Lillie, who sold me this specimen). K. Nash specimen (No. 80) & image.