What Katy Did

Sarah Chauncey Woolsey (Jan 29, 1835 – Apr 9, 1905) was an American children's author who wrote under the pen name Susan Coolidge. Woolsey was born into New England Dwight family, in Cleveland, Ohio. Woolsey worked as a nurse during the American Civil War (1861–1865), after which she started to write. She is best known for her classic children's novel What Katy Did (1872). 

«What Katy Did» follows 12-year-old Katy Carr. She lives with her widowed father and her two brothers and three sisters in a small midwestern town. Katy can hardly avoid getting into mischief almost daily. When her mother died four years earlier, Katy promised to be a little mother to her siblings, but mainly she is the kind of big sister who leads them into all sorts of exciting adventures.