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Howlett, Charles F.
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The Glorious Art of Peace : From the Iliad to Iraq.

Gittings, John.
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Imperial Germany and a world without war : the peace movement and German society, 1892-1914

Chickering, Roger, 1942-
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The League of Nations Union, 1918-1945

Birn, Donald S.
Oxford : Clarendon Press ; New York : Oxford University Press, 1981.

Never at war : why democracies will not fight one another

Weart, Spencer R., 1942-
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Nothing less than victory : decisive wars and the lessons of history

Lewis, John, 1955-2012.
Princeton : Princeton University Press, 2010.

Origins of the modern American peace movement, 1915-1929

DeBenedetti, Charles.
Millwood, N.Y. : KTO Press, [1978]

The peace reform in American history

DeBenedetti, Charles.
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The Routledge history of world peace since 1750

Abingdon, Oxon [England] ; New York, NY : Routledge, 2019.
[Enhanced Credo edition]

Toward a warless world : the travail of the American peace movement, 1887-1914

Patterson, David S., 1937-
Bloomington : Indiana University Press, [1976]

War and the liberal conscience

Howard, Michael, 1922-2019.
New Brunswick, N.J. : Rutgers University Press, 1978.