Items

Items

• 

  [D8020ZAG], Letter from Simon Newcomb to Thomas Alva Edison, January 19th, 1880

  1880-01-19
• 

  [D8020ZAT], Letter from Simon Newcomb to Thomas Alva Edison, January 28th, 1880

  1880-01-28
• 

  [D8020ZBX], Letter from Simon Newcomb to Thomas Alva Edison, February 24th, 1880

  1880-02-24
• 

  [D8020ZBY], Letter from Simon Newcomb to Thomas Alva Edison, February 25th, 1880

  1880-02-25