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    This 19th century photograph shows several workers at the entrance to one of the gypsum (plaster of Paris) near Green Lane in Paris, Ontario. This land was at one time owned by Hiram Capron.

    This 19th century photograph shows several workers at one of the gypsum (plaster of Paris) near Green Lane in Paris, Ontario. They have with them a horse-cart for transporting the gypsum. This land w