1867, Report Presented to the Trades Unions Commissioners by the Examiners Appointed to Inquire Into Acts of Intimidation, Outrage, Or Wrong Alleged to Have Been Promoted, Encouraged, Or Connived at by Trades Unions in the Town of Sheffield, Great Britain. Royal Commission on Trades Unions. G.E. Eyre and W. Spottiswoode, 1867. p. 225