Pickets by the fire

[lhsnj]

Does anyone know where I might be able to find an on-line high res version of the photo:



It is from the "The Civil War", the book that "accompanies" the Ken Burn's PBS series of the same name. It is on Page 185 of the book.

The only on-line copy I was able to find is the small one above. It is marked as Confederate Pickets trying to stay warm outside Fredericksburg.

Thanks