Leaf beginning "Use of Open Steam," written on the verso of a torn form from the Patent Office, 1880

Leaf beginning "Use of Open Steam," written on the verso of a torn form from the Patent Office, 1880, Box: 1, Folder: 46. Notes and annotations in 1859 edition of The Manufacture of Photogenic or Hydro-carbon Oils, MS C79. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/382399 Accessed March 19, 2026.