Items

• [D8020A], Letter from N.Y. City. Bureau of Lamps and Gas, Stephen McCormick to Thomas Alva Edison, January 2nd, 1880
  1880-01-02
• [D8020I], Letter from N.Y. City. Bureau of Lamps and Gas, Stephen McCormick to Thomas Alva Edison, January 5th, 1880
  1880-01-05
• [D8020ZHI], Letter from N.Y. City. Bureau of Lamps and Gas, Stephen McCormick to Thomas Alva Edison, October 1st, 1880
  1880-10-01
• [D8020ZHT], Letter from Stephen McCormick, N.Y. City. Bureau of Lamps and Gas to Thomas Alva Edison, October 13th, 1880
  1880-10-13
• [D8023ZBX], Letter from Stephen McCormick, N.Y. City. Bureau of Lamps and Gas to Calvin Goddard, December 27th, 1880
  1880-12-27