Items

• [X0980F] Reminiscence, William Joseph Hammer, Undated
• [X098E22], Technical Note, William Joseph Hammer, 1882
  1882-00-00
• [X098E28], Technical Note, William Joseph Hammer, 1883
  1883-00-00
• [X098E28A], Technical Note, William Joseph Hammer, 1883
  1883-00-00