A saddled horse standing beside a giant eastern cottonwood is the subject of a nitrate-based cellulose negative given to me by the man who took the shot in 1938 while prowling about for ivory-billed woodpeckers in Louisiana's vast Tensas Swamp. The tree appears to be nearly as wide as James Tanner's sorrel gelding is long. Even in what then was the closest thing remaining to a large, old-growth bottomland hardwood forest in America, the tree in its size was an anomaly.