Up for sale is a trade catalog put out by the Bethlehem Foundry & Machine Co. featuring Wedge Mechanical Ore Roasting Furnaces.  Undated, seems circa early 1900's to me.  High quality cover.  In regards to what this booklet entails, "Our policy and purpose is to offer the industries Roasting Furnace Service rather than a pre-designed or stock-built machine."  Contains 35 pages in all.  Very good condition.  I charge a shipping fee so that I can combine shipping for those that want to take advantage of purchasing more than one item.
Tired of your improperly packed purchases getting damaged in shipping? I pack with care. I use a full sheet of rigid protective material, a plastic sleeve, a 'Please Do Not Bend' sticker, and free Delivery Confirmation. All of my items are originals, I do not deal in reproductions. I am happy to ship internationally.