How much information is on the Battle of Trafalgar?

I have to do a 'what-if' project for my European History cl. I'm really interested in the Napoleonic Wars, Horatio Nelson in particular. I wanted to do a project asking 'what-if' Nelson had lost the Battle of Trafalgar. However, I'm wary of choosing it because I'm not sure if there will be a lot of information on it. The biggest consequence is that France gains control of the high seas, but I'm not sure what kind of book I should be looking for ... please help!