Found a free source for a list of prisoners of war from the CSA with deaths and other details of Johnson's Island...and the List of officers and men of Beale's Cavalry Brigade surrendered at Appomattox.

Johnson's Island starts at page 233
Beale's Brigade starts at page 349

Other items...The career of the CSS Virginia starts at page 193

http://books.google.com/books?id=ZD8SAAAAYAAJ&printsec=frontcover&dq=Miscellaneous+papers,+1672-1865:&hl=en&sa=X&ei=qHJZT6e9O6qoiQLHlp20Cw&ved=0CDYQ6AEwAA#v=onepage&q&f=false

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David Upton