Charles Dickens wrote "A Christmas Carol" in 1843 in part because he was appalled at the living conditions of England's urban poor, especially after a visit that September to a so-called Ragged School for London slum children. But he also wrote it because he needed money. His sixth novel, "Martin Chuzzlewit," was not selling well, relatives were hitting him up for loans, and he was having trouble making the rent payments on the big London house he had moved his family into a few years earlier.