Statistics for occurrence #1 of “Captain Leeper” in year 1863, month December of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...the people will not let it perish either by the hands of indiscreet friends or open foes, and we warn them both to stand clear of an avalanche which will inevitably fall upon their own heads. Captain Leeper , commanding National scouts in South-East Missouri, overtook three guerrillas, belonging to Reeve's band, near Black River, and succeeded in killing the entire party. A fight took place at Fort...
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