Source:
- “General Burnside’s Mine. Diagram of the Mine Exploded under the Rebel Fort before Petersburg, by Colonel Pleasants, Forty-eighth Pennsylvania Volunteers, July 30, 1864.” Philadelphia Inquirer. August 3, 1864, p. 1 col. 3-4 ↩
DIAGRAM: General Burnside’s Mine, July 30 (NP: Philadelphia Inquirer)
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