Items

• [D7711ZAM], Memorandum, Thomas Alva Edison, 1877
  1877-00-00
• [MBLB1145], Letter from Charles Batchelor to Robert Henry, June 30th, 1877
  1877-06-30
• [MBLB1159], Letter from Charles Batchelor to Edward Hibberd Johnson, July 18th, 1877
  1877-07-18
• [MBLB1174], Letter from Thomas Alva Edison to George Harrison Bliss, July 26th, 1877
  1877-07-26