Statistics for occurrence #1 of “Bull” in chapter 1.7 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 7: Prisons and Hospitals.:

... the Confederate cavalryman, but by the middle of 1863 the Union cavalry had also become a factor. The cavalry fight in which these prisoners were taken occurred at the foot of the upper end of the Bull Run range of hills, in Loudoun County, in and around the village of Aldie. The Confederates were driven from the field by General Pleasonton and his men, but not without serious loss to the latter....
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Bull 267 4 37 0 0 user votes
John Bull 519 0 3 0 0 user votes
Johnny Bull 60 0 0 0 0 user votes
William Bull 40 0 6 0 0 user votes
John P. Bull 37 0 3 0 0 user votes
Samuel Bull 34 0 0 0 0 user votes
Henry Bull 28 0 0 0 0 user votes
Robert Bull 25 0 1 0 0 user votes
Ole Bull 20 0 0 0 0 user votes
Dixy Bull 10 0 0 0 0 user votes
George Bull 10 0 0 0 0 user votes
James M. Bull 7 0 7 0 0 user votes
Dyer Bull 6 0 2 0 0 user votes
G. A. Bull 6 0 2 0 0 user votes
H. C. Bull 6 0 2 0 0 user votes
J. Bull 6 0 0 0 0 user votes
John C. Bull 5 0 1 0 0 user votes
B. S. Bull 4 0 0 0 0 user votes
David Bull 4 0 0 0 0 user votes
Deborah Bull 4 0 0 0 0 user votes
Elisha Bull 4 0 0 0 0 user votes
Gustavas A. Bull 4 0 0 0 0 user votes
Joseph Bull 4 0 0 0 0 user votes
L. R. Bull 4 0 0 0 0 user votes
Ruth Bull 4 0 0 0 0 user votes
Spanish Bull 4 0 0 0 0 user votes
Thomas S. Bull 4 0 0 0 0 user votes
Vicar Bull 4 0 0 0 0 user votes
Watson Bull 4 0 0 0 0 user votes
A. L. Bull 3 0 1 0 0 user votes
James H. Bull 3 0 3 0 0 user votes
Mary Anne Bull 3 0 1 0 0 user votes
Pat Bull 3 0 1 0 0 user votes
W. S. Bull 3 0 3 0 0 user votes
Wizard Bull 3 0 1 0 0 user votes
Attakapas Bull 2 0 0 0 0 user votes
C. W. Bull 2 0 0 0 0 user votes
Ephraim W. Bull 2 0 0 0 0 user votes
Irish Bull 2 0 0 0 0 user votes
Isaac D. Bull 2 0 2 0 0 user votes
J. M. Bull 2 0 0 0 0 user votes
J. W. Bull 2 0 0 0 0 user votes
James J. Bull 2 0 0 0 0 user votes
Jean Bull 2 0 0 0 0 user votes
Opelousas Bull 2 0 0 0 0 user votes
Robert S. Bull 2 0 0 0 0 user votes
Thomas G. Bull 2 0 0 0 0 user votes
W. A. Bull 2 0 0 0 0 user votes
William I. Bull 2 0 0 0 0 user votes
Andelie Bull 1 0 1 0 0 user votes
E. Bull 1 0 1 0 0 user votes
Edmund Bull 1 0 1 0 0 user votes
Fred'k Bull 1 0 1 0 0 user votes
G. W. Bull 1 0 1 0 0 user votes
Gustavus A. Bull 1 0 1 0 0 user votes
J. C. Bull 1 0 1 0 0 user votes
Octavius S. Bull 1 0 1 0 0 user votes
Sallie Bull 1 0 1 0 0 user votes
W. L. Bull 1 0 1 0 0 user votes
William S. Bull 1 0 1 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.