Sources
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- https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7fkNvKd7iojpx6j0ZtDwsJ-PCd3MkjZP1YUdbt4gI-biec5TlIF-m-DVvsVC-xuA182dTeo9ynhpMtx4hLLwaXnoEYF5hJst8W7DXgbFcgQqaVktS378lTLieWvbwNGIKdfcBkDPyng4/s1600/bradyphoto.gif
- http://www.askart.com/AskART/images/interest/civilwar/Henry_A_McArdle.jpg
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- http://xroads.virginia.edu/~hyper/crane/images/section3.html
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- http://www.kidport.com/reflib/usahistory/civilwar/Images/UnionSoldier.jpg
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- http://seattle98.wordpress.com/2011/08/09/michelle-bat-shit-insane-bachmann-supports-view-that-slavery-wasn%E2%80%99t-so-bad-after-all/
- http://upload.wikimedia.org/wikipedia/commons/a/a9/Slaves_in_chains_(grayscale).png
- Whitman, Walt. Preface. Leaves of Grass. By Whitman. Brooklyn, 1855. iii-xii.
