The dangerous classes of New York, and twenty years' work among them.

Eitemau Tebyg

• The dangerous classes of New York and twenty years' work among them
  gan: Brace, Charles Loring, 1826-1890
  Cyhoeddwyd: (1872)
• The dangers and defences of New York. Addressed to the Hon. J. B. Floyd, secretary of war
  gan: Barnard, J. G. (John Gross), 1815-1882
  Cyhoeddwyd: (1859)
• A half century with juvenile delinquents; or, The New York House of refuge and its times
  gan: Pierce, Bradford Kinney, 1819-1889
  Cyhoeddwyd: (1869)
• The New York Tombs; its secrets and its mysteries. Being a history of noted criminals, with narratives of their crimes
  gan: Sutton, Charles
  Cyhoeddwyd: (1874)
• The nether side of New York; or, The vice, crime and poverty of the great metropolis
  gan: Crapsey, Edward
  Cyhoeddwyd: (1872)