Items

• [LB049515], Letter from General Zinc Recovery and Lighting Co Ltd, John M Henderson (London) to Thomas Alva Edison, February 2nd, 1891
  1891-02-02
• [LB049517], Letter from General Zinc Recovery and Lighting Co Ltd, John M Henderson (London) to Edison Manufacturing Co, Thomas Alva Edison, March 13th, 1891
  1891-03-13
• [LB049520], Letter from John M Henderson (London), General Zinc Recovery and Lighting Co Ltd to Thomas Alva Edison, April 9th, 1891
  1891-04-09
• [LB049523], Letter from General Zinc Recovery and Lighting Co Ltd, John M Henderson (London) to Thomas Alva Edison, May 13th, 1891
  1891-05-13