Items

• [D8756AGU], Letter from Electric Manufacturing Co to Thomas Alva Edison, December 8th, 1887
  1887-12-08
• [D8856AAA], Letter from Electric Manufacturing Co, R J Pratt to Thomas Alva Edison, January 3rd, 1888
  1888-01-03
• [D8856ACC], Letter from R J Pratt, Electric Manufacturing Co to West Orange Laboratory, February 15th, 1888
  1888-02-15