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Illustration from a Paper entitled ‘Radio-activity of Uranium’ by Sir William Crookes, 1900

Illustration from a Paper entitled ‘Radio-activity of Uranium’ by Sir William Crookes, 1900

1900
Earliest etchings without ground (before 1852). Two copper photoglyphic plates - illustration of two horsemen, taken from 'Illustrated London News', 5" x 3 3/4", one plate on block; with original glass positive.

Two Horsemen

1852