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In page Thomas Wentworth Higginson:

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Higginson described his Civil War experiences in Army Life in a Black Regiment (1870),[2] which has been published online by Project Gutenberg (gutenberg.org). He contributed to the preservation of Negro spirituals by copying dialect verses and music he heard sung around the regiment's campfires. In his book, Drawn by the Sword, historian James M. McPherson argued that Higginson's service as a Union soldier showed in part that he did not share the "powerful racial prejudices" of others during the time period.[3]