Vocabulum; Or the Rogue's Lexicon: Compiled from the Most Authentic Sources

Vocabulum; Or the Rogue's Lexicon, compiled by George W. Matsell and first published in 1859, is a unique dictionary of slang and cant used by criminals in mid-19th century New York City. As a former Chief of Police, Matsell aimed to bridge the gap between law enforcement and the criminal underworld by documenting the specialized language of rogues and vagabonds. This lexicon not only serves as a historical reference but also illustrates how this subculture's language has influenced mainstream English. It is notable for its insight into the evolution of American slang and its relevance to both law enforcement and the general public.