The unit history is "The Partisan Rangers of the Confederate States Army," edited by William J. Davis, 1904.

This book is on Google Books at http://books.google.com/books?id=7ogvAAAAYAAJ&printsec=frontcover&dq=partisan+rangers&hl=en&ei=sf3kTbueH8jpgAfJ7ey6Bg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCoQ6AEwAA#v=onepage&q&f=false. (If this link doesn't work, just search for "Partisan Rangers" at the google books link.)

Geoff Walden