Statistics for occurrence #1 of “Sickles” in part 2.11, chapter 2.12, page 251 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 2: Two Years of Grim War.:

...Corps) forming the shank to the southward as far as Round Top. On his own responsibility Sickles had advanced a portion of his line, leaving Little Round Top unprotected. Upon this advanced line of Sickles , at the Peach Orchard on the Emmitsburg road, the Confederates fell in an effort to turn what they supposed to be Meade's left flank. Only the promptness of General Warren, who discovered the gap a...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Daniel E. Sickles 1,087 48 35 2 0 user votes
Sickles 1,124 0 184 0 0 user votes
D. E. Sickles 349 0 7 0 0 user votes
Dan Sickles 207 0 3 0 0 user votes
Daniel Edgar Sickles 67 0 5 0 0 user votes
Daniel Sickles 27 0 5 0 0 user votes
Gen Sickles 24 0 0 0 0 user votes
D. A. Sickles 3 0 1 0 0 user votes
Damal E. Sickles 2 0 0 0 0 user votes
David B. Sickles 2 0 0 0 0 user votes
Gen Dan Sickles 2 0 0 0 0 user votes
H. F. Sickles 2 0 0 0 0 user votes
D. N. Sickles 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.