↑Hopkinson, Irish War of Independence, p 201-202. Hopkinson lists 363 RIC killed in Southern Ireland 1919-21, Robert Lynch, the Northern IRA and the Early Years of Partition, gives a figure of 38 RIC and 43 USC personnel killed in Northern Ireland 1920-22 p.227 and p.67. The RIC casualty figure includes 4 Dublin Metropolitan Policemen and 2 Harbour Police
↑Hopkinson lists 200 killed in southern Ireland 1919–21,Richard English, Armed Struggle, a History of the IRA, gives a total of 557 killed in Northern Ireland in 1920-1922 page 39-40