Items

Items

• 

  [D7826ZEY], Letter from Howarth Bros to Thomas Alva Edison, November 21st, 1878

  1878-11-21
• 

  [D8756ADY], Letter from Howarth Bros to West Orange Laboratory, October 25th, 1887

  1887-10-25
• 

  [D8756AEX], Letter from Howarth Bros to West Orange Laboratory, November 5th, 1887

  1887-11-05
• 

  [D9230AAA], Letter from Howarth Bros to Thomas Alva Edison, February 3rd, 1892

  1892-02-03