With its around 26,000 items by over 1,900 women composers from 9th to 21st century and 52 nations, the Archive of Women in Music is the most extensive international archive of women composers worldwide. In addition to compositions and other artistic estates of women in music, we collect secondary literature, theses and press reports as well as grey literature such as concert programmes. Numerous recordings of published works, recordings of radio shows and private recordings of concerts have a fixed place in the Archive. Video and DVD recordings complete the inventory. Particular treasures of the archive include a collection of first editions, in particular from the 19th century, and hand-written letters by Clara Schumann. The inventory of classical compositions is complemented by a special collection covering the areas of rock, pop, jazz, chansons and world music.