The Adanson Botanical Illustrations is a world-famous 18th century collection of the French naturalist Michel Adanson (1717-1806). Adansons books, botanical illustrations, manuscripts and letters from the personal library are curated by the Hunt Institute for Botanical Documentation. In the framework of a scholarly cooperation between the Hunt Institute and the Max Planck Institute for the History of Science the Adanson illustrations are digitized and made for the first time openly and freely available for research in ECHO.