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

... Zzz
A fight took place at Barbee's Cross-Roads, Va., between a patrol of forty-nine men belonging to the Sixth Ohio caval...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
ZZZ 3,532 14 0 0 0 user votes
Interrogavi Terramn Zzz 4 0 0 0 0 user votes
March Zzz 2 0 0 0 0 user votes
S. ZZZ 2 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.