Items

Items

• 

  [D8704AEP], Letter from Alfred Porter Southwick to Thomas Alva Edison, November 8th, 1887

  1887-11-08
• 

  [D8704AFJ], Letter from Alfred Porter Southwick to Thomas Alva Edison, December 5th, 1887

  1887-12-05
• 

  [LB052357], Letter from Alfred Porter Southwick to Arthur Edwin Kennelly, September 21st, 1891

  1891-09-21