The Poetry of József Kiss (1897), design by Nándor Gottermayer.
There’s always more Art Nouveau. Searching for term at the Google Art Project turns up a surprising number of paintings, drawings and other objects which are nothing of the sort, as well as many things which are, of course. These are a selection of the latter (mostly), and a reminder that it’s worth returning to the site every so often to look for new additions. Nándor Gottermayer’s book cover is a gorgeous design I’ve never seen before.
Vase (before 1890) by Émile Gallé.
Flower of Death (1895) by Akseli Gallen-Kallela.
The Offering of Mephistopheles (c.1930) by Roland Paris.