KEIM (Franz) - CZESCHKA (Carl Otto) Die Nibelungen. Vienna, Leipzig: Gerlach, Wiedling, [1909]. - In-12, 148 x 135 : 67 pp. Original edition of this superb Art Nouveau children's book, forming the 22nd volume of the "Gerlach Jugendbücherei" collection published in 34 volumes from 1902 to 1920. {Each volume was illustrated by a different artist, and this is unquestionably one of the finest, if not the finest, of the series. It features several black vignettes and 8 double-page color compositions by Austrian artist Carl Otto Czeschka (1878-1960), a friend of Gustav Klimt and a prominent member of the Wiener Werkstätte, an arts and crafts movement that sought to combine art and functional design. Used rubbing to the boards. Very good condition inside.