Before Mnemosyne: Wilhelmine Cultural History Exhibitions and the Genesis of Warburg's Picture Atlas**

Aby Warburg's Bilderatlas Mnemosyne, left unfinished in 1929, has attracted significant interest in recent decades. This essay offers a new interpretation of Warburg's "picture atlas," not in relation to modernist collage and photomontage, but as an heir to scientific pedagogical exhibitions of the late Wilhelmine period. It deals in particular with two "public enlightenment" shows curated by the Leipzig medical historian Karl Sudhoff, whose work Warburg admired and employed: the first on with the history of hygiene in Dresden in 1911, the second in Leipzig, three years later, on the development of scientific images. Like Warburg, Sudhoff appreciated artworks and artifacts as sources for the history of science and medicine. His exhibitions consisted of assemblages of photographic reproductions-some of which were provided by Warburg himself-and uncannily anticipate Mnemosyne in both form and content. By examining the exchange of materials and display methods between the two scholars, the article explores how their respective visual projects reflected deeper disagreements over the public role of science, the epistemic power of images, and the persistence of the irrational in the human psyche.