Wow, Gargoyle, that's a lot of porn!

John, the only image I saw available was still low-res--and the light blue print doesn't help. Oddly, today that link appears to be broken. I was able to improve the legibility a little with photo enhancement software, but I doubt much more could be done short of running it through the kind of programs they use to examine astronomic images or spy photos. The enhancements gave me more confidence in my original guesses, but haven't rendered the questionable bits any clearer.

Could you list some of the other sites you know of with sheet music scans?

In preparing my transcription, I referred to
* "The Constitution and the Guerriere" at American Memory
* The versions of "Monitor and Merrimack" at American Memory; one of them is in the DT
* "The Iron Merrimack" as sung by Judge Learned Hand for the LoC
* Online historical accounts of the encounter and each vessel named.
I verified all personal names, place names and essential details. The sole exception is "Helly Heck". It should be "Hack", to satisfy both the rhyme and the vowel I discern. However, this line must refer to the demise of the "Merrimac" [U.S.S. Virginia] two months later, when she was torched and blown up at dock by her own commander during the evacuation of Norfolk; only then could the North really start cheering.

In short, any errors in my transcription are at least consistent with the historical evidence--no Lady Mondegreens lurking about.