Vicksburg, su civilwar.org, Civil War Trust. URL consultato il 21 agosto 2016.
cornell.edu
ebooks.library.cornell.edu
Official Records, Series I, Volume XXIV, Part 2, pages 148-158.
Official Records, Series I, Volume XXIV, Part 2, pages 326-328.
nps.gov
National Park Service.. Grant's army arrived at the outskirts of Vicksburg on May 19, but formal siege operations began with Grant's Special Order No. 140 on May 25 (Simon, p. 267).
"Milliken's Bend". URL consultato il 19 gennaio 2018 (archiviato dall'url originale il 14 agosto 2014)., National Park Service (NPS) e ; Bearss, vol. III, pp. 1175-87.