The dangerous classes of New York and twenty years' work among them. This book, "The dangerous classes of New York and twenty years' work among them", by Charles Loring Brace, is a replication of a book originally published before 1872. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.