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Historical accounts of the Battle of Trafalgar

 
Trafalgar (1976)
Illustrated (black-and-white) large-format account of the campaign and the battle by John Terraine.  
The Campaign of Trafalgar, 1803-5 (1997)  
Large format illustrated (black-and-white) history of the period depicted, edited by Robert Gardiner and written by ten naval historians.  
Trafalgar: The Nelson Touch (1969)  
Detailed account of the battle and the events leading up to it by David Howarth.  
Trafalgar: Countdown to Battle, 1803-5 (1992)  
More than most, covers the political and even psychological background to the campaign. By Alan Schom.