Key to engraving after 'Men of Science Living in 1807-8', by William Walker, 1862 - NPG 1075b - © National Portrait Gallery, London

© National Portrait Gallery, London

Key to engraving after 'Men of Science Living in 1807-8'

by William Walker
engraving, 1862
10 3/4 in. x 17 1/8 in. (273 mm x 435 mm)
Purchased, 1896
NPG 1075b

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