"London Labour and the London Poor, Vol. 4" by Henry Mayhew is a work of Victorian journalism published in 1861. This volume, co-written with Bracebridge Hemyng, John Binny, and Andrew Halliday, ventures into London's darkest corners to document the lives of prostitutes, thieves, and beggars. Departing from Mayhew's earlier interview-based approach, it takes a more statistical view of Victorian society's marginalized inhabitants. The work reveals the precarious existence of those who "won't work" in what was then the world's richest city. (This is an automatically generated summary.)