Statistics for occurrence #1 of “Averell” in chapter 1 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Index:

... Averell
M. A. Townsend, IX., 276. E. S. P. Ward, IX., 144, 145, 146. Headquarters, mail and newspapers, VIII....
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
W. W. Averell 101 4 5 0 0 user votes
William W. Averell 332 0 12 0 0 user votes
Averell 296 0 62 0 0 user votes
W. D. Averell 2 2 0 0 0 user votes
Thomas H. Averell 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.