Estonia-born strongman George Hackenschmidt used this passport for traveling inside Russia between 1906-09 based on multiple inner stamps. The 4" x 6" book features extensive writing in Russian from his own hand, including four full pages. There are three full signatures, plus what we believe to be a rare signature of his real Russian name, though this is not certain. The wrestler, who also fancied himself as a writer-philosopher, was the first freestyle Heavyweight Champion of the world