![](http://www.alamy.com/thumbs/6/9E5E2186-B0F0-4151-8C93-616C390803A3/MR3XBP.jpg)
Engraving depicting an envelope folding machine, manufactured by R. Fenner to their patent with improvements. Dated 19th century
Size: 4223px × 4966px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., 1872, 19th, archival, archive, century, engraved, engraving, envelope, fenner, folding, historical, history, illustrated, illustration, letter, letters, machine, patent