Black and white negative of an Irish Elsevier Printers Ltd. stall at Expo 75.

Black and white negative of an Irish Elsevier Printers Ltd. stall at Expo 75.

Black and white negative of an industry stall at Expo 75. Negative missing.

Black and white negative of an industry stall at Expo 75. Negative missing.

Black and white negative copy of equipment for Infotronics.

Black and white negative spares of Infotronics.

Black and white negative of a new machine at Infotronics.

Black and white negative of a new machine at Infotronics.

Black and white negative of a new machine at Infotronics.

Black and white negative of a new machine at Infotronics.