Photogenic drawings are the earliest form of negatives, produced by placing an opaque object directly on a sheet of sensitised paper and exposing it to sunlight until the unshielded paper darkened resulting in a light silhouette on a dark background; the paper prints were made by exposing a second sheet of paper to sunlight through the negative, resulting in a positive, the silhouette dark against a light background.

Provenance

Believed to have been aquired by the vendor for sale by private treaty