| #2 |  Introduction to Christianity
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| #3 |  A History of Christianity A History of Christianity: The First Three Thousand Years
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| #4 |  Protestants Protestants: A History from Wittenberg to Pennsylvania 1517 - 1740
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| #5 |  The New Gospel of Christian Atheism
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| #6 |  Christian Atheism: How to Be a Real Materialist
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| #7 |  Christian Socialism Christian Socialism: The Promise of an Almost Forgotten Tradition
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| #8 |  Christian Socialism Christian Socialism: An Informal History, With an New Introduction by Gary Dorrien
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| #9 |  Red Theology Red Theology: On the Christian Communist Tradition
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| #10 |  Marxism and Christianity
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| #11 |  The Gospel of Church: How Mainline Protestants Vilified Christian Socialism and Fractured the Labor Movement
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| #12 |  The Work We Have to Do The Work We Have to Do: A History of Protestants in America
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| #13 |  Christianity's American Fate: How Religion Became More Conservative and Society More Secular
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| #14 |  Communism in the Bible Communism in the Bible
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| #15 |  All Things in Common: The Economic Practices of the Early Christians
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