Johann Baptist Zwecker (1814–1876) was a German illustrator of books and magazines.
He illustrated children's books including Hans Christian Andersen's The Ice-Maiden (Richard Bentley, 1863), as well as tales of adventure such as African Hunting and Adventure... by William Charles Baldwin.
He is however best known for his artwork for natural history books including Alfred Russel Wallace's The Geographical Distribution of Animals.
[1] His greatest work was to illustrate John George Wood's Popular Natural History (Routledge, 1871) in three volumes.
[2] Among his works are The Hartebeest, 1862; Arrival at the Depôt at Cooper's Creek, 1862; Ostrich Hunting, 1862; and A Race for Life in a Jungle, 1862.