From the Mississippi Department of Archives and History Governor Clark Collection. Letter from Mississippi salt agent Z. A. Philips at the Mississippi State Salt Works to Mississippi Governor Charles Clark, concerning the effort to have his workers exempted from the draft.

From the Mississippi Department of Archives and History Governor Pettus Collection. Letter from John H. Evans at the salt works in St. Stephens, Alabama, seeking boilers for removing salt from water.

From the Mississippi Department of Archives and History Governor Clark Collection. Letter from state salt agent Z. A. Philips at the Mississippi state salt works to Mississippi Governor Charles Clark concerning the effort to have his workers exempted from the draft.