slide with cardboard holder. Image depicts forested landscape with cleared area in the centre of frame. Crane, pipeline and labourers visible in clearing. Recto captions printed in blue- top left: "date," right side: "made in Canada," left side: "Patented," bottom edge: "Project from this side arrow shows position." Verso captions in blue- "Mitchell Photo Supply Ltd. Dominion Sq., Montreal," bottom centre: "Processed by Etco."