Rudolph Ackermann, German publisher, early 19th century.
© Science Museum / Science & Society Picture Library
Aquatint engraving from a painting by A Mouchet. Rudolph Ackermann (1764-1834), patented a method for making articles waterproof in 1801 and established art lithography in England in 1817. Among his best known publications is 'Microcosm of London' (1808-11), by William Combe, with illustrations by Thomas Rowlandson (1756-1827) and Augustus Charles Pugin (1762-1832).