Complex sentence: The Women's Library's origin derives from the London National Society for Women's Suffrage, established in 1867, though the library was not formally organised until the 1920s, and the first Librarian, Vera Douie, not appointed until 1 January 1926.
Split into simpler sentences: The Women's Library's origin derives from the London National Society for Women's Suffrage, a women's suffrage organization established in 1867. The library was first formally organised in the 1920s, with the first Librarian, Vera Douie, appointed on 1 January 1926.