Ten Days in a Mad-House by Nellie Bly was based on articles written while Bly was on an undercover assignment for the New York World, feigning insanity at a women's boarding house, so as to be involuntarily committed to an insane asylum. She then investigated the reports of brutality and neglect at the Women's Lunatic Asylum on Blackwell's Island (now called Roosevelt Island). The book received acclaim from critics at the time. Accumulation of her reportage and the release of her content brought her fame and led to a grand jury investigation and financial increase in the Department of Public Charities and Corrections.