Books by John Jernberg:
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Jernberg, John: Forging: Manual of Practical Instruction In Hand Forging of Wrought Iron, Machine Steel, and Tool Steel; Drop Forging; and Heat Treatment of Steel, Including Annealing, Hardening, and Tempering (Chicago: American Technical Society, 1919)
Additional books by John Jernberg in the extended shelves:
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Jernberg, John: Forging : instruction paper (American school of correspondence, 1916), also by Ill.) American School (Lansing, John Lord Bacon, and John Lord Bacon (page images at HathiTrust)- Jernberg, John: Forging; manual of practical instruction in hand forging of wrought iron, machine steel, and tool steel; drop forging; and heat treatment of steel, including annealing, hardening, and tempering (American technical society, 1918) (page images at HathiTrust)
- Jernberg, John: Forging : manual of practical instruction in hand forging of wrought iron, machine steel, and tool steel; drop forging; and heat treatment of steel, including annealing, hardening, and tempering (American Technical Society, 1917) (page images at HathiTrust)
Find more by John Jernberg at your library, or elsewhere.