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The Battle of Champion Hill: Grant's March From Raymond to Champion Hill
A description from Grant's personal memoirs of the road from Raymond to Champion Hill along with a map showing Grant's march inland in May, 1863.
Curated OER
National Park Service: Vicksburg National Military Park: Vicksburg Campaign
This resource provides detailed information on the Vicksburg campaign and siege, culminating in the surrender of the city and its defending army.