35mm slide in cardboard sleeve. Depicts a piece of machinery by a large window in a factory building. 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." REcto inscriptions, top edge: "Welding boom (I.M.A.) used by westeel Regina, Feb '57." Verso captions, printed in blue- top centre: "Mitchell Photo Supply Ltd. Dominion Sq., Montreal," bottom centre: "Processed by Etco."

35mm slide in cardboard holder. Depicts a worker in a welding mask working on a piece of machinery. A large spool of wire is visible in the top right corner. Recto caption, left edge: "5, Made in U.S.A.," embossed: "Apr 59." Recto inscription, top right, pencil: "4." Verso captions, left: "Processed by Kodak." right; "Kodachrome Transparency."

slide with cardboard holder. Depicts a worker with welding mask doing some welding on a large piece of machinery. Recto caption, bottom: "9, Made in U.S.A." Recto inscription, top right: "1." Verso captions: "Processed by Kodak," "Kodachrome Transparency."

glass-covered slide with silver paper mat and black tape around the edges. Depicts a worker with welding mask working using a kind of gun. Recto inscription in black ink on white label: "Aircomatic Midget Gun."

silde covered in glass held together with black tape at edges. Depicts man in welding mask operating piece of machinery. Recto inscription top, on label: "Automatic Aluminum Pipe Welding Machine."

glass-covered slide held together with red tape at edges. Depicts man holding welding mask observing a piece of machinery marked "Airco". Recto inscription top right, blue ink: "20"

glass-covered slide with red tape at edges and silver mat. Depcits two workers in goggles using torches to weld something. Top right recto inscription, "22."

glass-covered slide with red tape edges. Depicts welder at with mask at construction site, working on steel I beam. Recto upper right inscription on label: "14"

silde with cardboard mount. Depicts men working outdoors on a pipeline in a forested landscape. Recto inscription, top, blue ink: "35 x 335 IMA used 6" line- 18 joints/hour." bottom left: "21." Recto captions 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."

glass covered slide with silver mat and red taped edges. Depicts forested landscape and pipeline.

glass covered slide, silver mat, black taped edges. Depicts piece of machinery composed of large cone and scaffolding. Recto inscription, black ink, left side: 'Dynaweld."

glass covered slide, silver mat, red taped edges. Depcits two men in yellow welding masks welding pipe outdoors in front of oil refinery type structure. Recto inscription, top right, "15."