​Original old printing magazine vintage ad for RUSSELL ERNEST BAUM in Philadelphia, PA.  Folders Air-Feed with human motion.  It picks u one sheet at a time and winds it, then feeds it with the perfect human motion harnessed, enabling deeding of any thickness, grade, texture or condition of stock.   Was located at 615-25 Chestnut Street. 
This 1926 unique one page printer industry trade advertisement would display beautifully matted and framed.