Keywords: Mine argent Cobalt Ontario 1918.jpg en Photograph glass lantern slide Silver Mine Cobalt ON about 1918 Anonymous Silver salts and transparent ink on glass - Gelatin dry plate process - 8 x 10 cm fr Photographie diapositive sur verre Mine d'argent Cobalt Ont vers 1918 Anonyme Plaque sèche à la gélatine 8 x 10 cm MP-0000 158 32 Anonymous circa 1918 PD-old Cobalt Mining District |