"There are currently objects from Otto Wagner's drawing estate, more than 400 works by Gustav Klimt, photographs by Trude Fleischmann and Robert Haas, large unpublished photo holdings on political Vienna in the 1970s and often sought-after images from the topographical photo collection and the Topics coffee house, Prater, Revolution 1848 and rulers. In addition to known holdings, the search often also yields numerous surprising hits, the museum announced." https://wien.orf.at/stories/3075645/