Black and white negative copy of Callins International machines.

Black and white negative copy of Callins International machines.

Black and white negative of Retos Ltd. Noted in the register that these negatives are 'not to be issued.'

Black and white negative of Retos Ltd. Noted in the register that these negatives are 'not to be issued.'

Black and white negative spares of a South African family at De Beers.

Black and white negative progress shots of the De Beers new building. Negative missing.

Black and white negative progress shots of the De Beers new building. Negative missing.

Black and white negative of a man in De Beers.

Black and white negative progress shots of De Beers building.

Black and white negative of a group at De Beers.