The book "The London Working Class and the Poor of London, Volume 3" by Henry Mayhew reveals to the reader a wide panorama of the life of poor Londoners of the 19th century. This work is a detailed sociological article that examines the working conditions, life and problems of the poorest strata of London society at that time. The author examines in detail their working conditions, housing, food, habits and beliefs, realizing all the complexity and poverty of these people's existence. Through the prism of his observations, Mayhew aims to draw public attention to the problems of the poor and encourage their solutions. "The London Working Class and the London Poor" is not only a valuable document about the past, but also an important guide to understanding contemporary social problems.