Christian Gottfried Ehrenberg
After his death in 1876, his collections of microscopic organisms were deposited in the Humboldt Museum at the University of Berlin. The "Ehrenberg Collection" includes 40,000 microscope preparations, 5,000 raw samples, 3,000 pencil and ink drawings, and nearly 1,000 letters of correspondence. His collection of scorpions, and other arachnids from the Middle East, is also held in the Berlin Museum.