This is an original 1919 sepia photogravure of a Bessemer Converter at the Bethlehem Steel Co., Bethlehem, PA. Please note that there is a brief descriptive text about the Bessemer steel process on the reverse. Please see both images.
This 94+ year old Item is rated Near Mint / Very Fine. No creases. No natural defects. No surface rub. No tears. No water damage.