Statistics for occurrence #1 of “Dahlgren” in chapter 8 of Daniel Ammen, Confederate Military History, a library of Confederate States Military History: Volume 7.2, The Atlantic Coast:

... Dahlgren
The Navy Department, on June 26th, addressed a letter to Rear-Admiral Dupont, from which the following is an extract: ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Dahlgren 827 44 205 18 0 user votes
Ulric Dahlgren 958 0 42 0 0 user votes
John A. Dahlgren 432 0 18 0 0 user votes
J. A. Dahlgren 209 0 1 0 0 user votes
U. Dahlgren 131 0 1 0 0 user votes
John Adolph Dahlgren 70 0 4 0 0 user votes
Charles B. Dahlgren 55 0 5 0 0 user votes
John Dahlgren 27 0 13 0 0 user votes
Ulrich Dahlgren 17 0 1 0 0 user votes
Ad Dahlgren 16 0 0 0 0 user votes
J. H. Dahlgren 10 0 0 0 0 user votes
Charles G. Dahlgren 5 0 1 0 0 user votes
Jonathan A. Dahlgren 4 0 0 0 0 user votes
C. G. Dahlgren 2 0 0 0 0 user votes
M. V. Dahlgren 2 0 2 0 0 user votes
Madeleine Vinton Dahlgren 2 0 0 0 0 user votes
Madeline Vinton Dahlgren 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.