Items

• [CJA114], Letter from William S Perry to Thomas Alva Edison, November 10th, 1892
  1892-11-10
• [CJD134162], Letter from William S Perry to Charles Batchelor, September 25th, 1891
  1891-09-25
• [CJD134167], Letter from William S Perry to Charles Batchelor, October 1st, 1891
  1891-10-01
• [MC004AAH], Letter from New Jersey and Pennsylvania Concentrating Works, William S Perry to Thomas Alva Edison, October 5th, 1893
  1893-10-05