Items

• [D7812A], Letter from John Cook to Thomas Alva Edison, January 5th, 1878
  1878-01-05
• [D8713AAD], Letter from John Cook to Thomas Alva Edison, September 7th, 1887
  1887-09-07
• [D8713AAJ], Letter from John Cook to Charles Batchelor, September 21st, 1887
  1887-09-21
• [D8814AAV], Letter from John Cook to Charles Batchelor, February 6th, 1888
  1888-02-06
• [SB1677177B], Letter from John Cook to Edison and Murray, Charles Batchelor, December 6th, 1874
  1874-12-06