NLM: Early true crime pamphlets.

Rev. Herbert Hayden,
tried for the 1879 murder
of Mary Stannard. From
The Rev H. H. Hayden:
An Autobiography (1880)

The latest online exhibition from NLM's History of Medicine Division is "Most Horrible and Shocking Murders: True Crime and Murder Pamphlets in the Collection of the National Library of Medicine." It includes pamphlets from the eighteenth and nineteenth centuries.