The Bow Street Runners, Gilbert Armitage.
The Chronicles of Bow Street, Percy Fitzgerald.
Treatise on the Police of the Metropolis, Dr. Patrick Colquhoun ( 1796).
The Annual Register.
A History of Police in England, Captain W. L. Melville Lee M. A.
A Police Encyclopaedia, H. L. Adam.
How Criminals Are Made and Prevented, Canon J. W. Horsley .
Reminiscences of Ex-Chief Inspector Littlechild.
Scotland Yard, Past and Present, Ex-Chief Inspector Cava. nagh.
At Scotland Yard, John Sweeney, Ex-Detective Inspector, C.I.D.
Dictionary of National Biography.
The Lighter Side of My Official Life, Sir Robert Anderson.
The Trial of George Joseph Smith, Eric R. Watson, LL.D.
For the Defence: The Life of Sir Edward Marshall Hall, K. C., Edward Marjoribanks.
Forty Years of Scotland Yard, Frederick Porter Wensley O. B.E .
Scotland Yard, Sir John C. B., C.B.E Moylan.
The History of the C.I.D., Margaret Prothero.
Scotland Yard, George Dilnot.
The Real Detective, George Dilnot.
Fifty Years Ago, Walter Besint.
Bygone Punishments, Robert Andrews.
She Stands Accused, Victor McClure.
Mysteries of Police and Crime, Arthur Griffiths.
Last Studies in Criminology, H. B. Irving.
Sidelights on Criminal Matters.