For many years the story of what happened to him during the Holocaust was unclear, until David Bolchover wrote about it in his biography of Guttman, titled The Greatest Comeback.
Selama bertahun-tahun cerita mengenai apa yang terjadi padanya selama holokaus tidak jelas, sampai David Bolchover menulis tentang hal ini dalam biografi Guttman yang berjudul "The Greatest Comeback".