Items

• [D8249ZAP], Letter from Cooke Locomotive and Machine Co, William Berdan to L Porsh, July 29th, 1882
  1882-07-29
• [D8249ZBQ], Letter from John Swinburne Cooke, Cooke Locomotive and Machine Co to L Porsh, 1882
  1882-00-00
• [LB015220], Letter from Thomas Alva Edison to L Porsh, February 1st, 1883
  1883-02-01