Items

Items

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  [D7812ZAJ], Letter from Charles Summer Wirt to Thomas Alva Edison, September 17th, 1878

  1878-09-17
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  [D7812ZAK], Letter from Charles Summer Wirt to Thomas Alva Edison, September 25th, 1878

  1878-09-25
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  [D7913J], Letter from Charles Summer Wirt to Thomas Alva Edison, February 17th, 1879

  1879-02-17
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  [D8503ZAS], Letter from Charles Summer Wirt to Thomas Alva Edison, May 12th, 1885

  1885-05-12
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  [D8536B], Letter from Charles Summer Wirt to Thomas Alva Edison, February 17th, 1885

  1885-02-17
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  [D8536L], Letter from Charles Summer Wirt to Thomas Alva Edison, December 12th, 1885

  1885-12-12
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  [D8536M], Letter from Charles Summer Wirt to William Symes Andrews, December 12th, 1885

  1885-12-12
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  [D8701AAI], Test Report, Bergmann & Co, Charles Summer Wirt, Philip Henry Klein, Jr., May 9th, 1887

  1887-05-09
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  [D8701AAK], Test Report, Bergmann & Co, Charles Summer Wirt, Philip Henry Klein, Jr., May 25th, 1887

  1887-05-25
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  [D8701AAN], Letter from Charles Summer Wirt to Alfred Ord Tate, Edison Phonoplex System, July 13th, 1887

  1887-07-13
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  [D8830AAR], Test Report, Charles Summer Wirt, William J Jenks, May 24th, 1888

  1888-05-24
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  [D8830ABV], Letter from Charles Summer Wirt to William J Jenks, August 18th, 1888

  1888-08-18
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  [D8855ACH], Letter from Charles Summer Wirt to Arthur Edwin Kennelly, December 9th, 1888

  1888-12-09
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  [D8935ABL1], Letter from Charles Summer Wirt to Charles Batchelor, September 18th, 1889

  1889-09-18
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  [D9143ABM], Letter from Charles Summer Wirt to Thomas Alva Edison, December 29th, 1891

  1891-12-29
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  [D9238AAA], Letter from Charles Summer Wirt to Alfred Ord Tate, January 12th, 1892

  1892-01-12
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  [E1405AT], Letter from Charles Summer Wirt to William Henry Meadowcroft, December 22nd, 1914

  1914-12-22
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  [F5F04BV], Letter from Charles Summer Wirt to Mina Miller (Mrs Thomas A.) Edison, September 27th, 1914

  1914-09-27
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  [LM304301], Letter from Charles Summer Wirt to James F Kelly, June 1st, 1890

  1890-06-01
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  [NB056024], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, October 8th, 1888

  1888-10-08
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  [NB056030], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, October 10th, 1888

  1888-10-10
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  [NB056043A], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, October 15th, 1888

  1888-10-15
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  [NB056048], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, October 12th, 1888

  1888-10-12
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  [NB056050], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, October 16th, 1888

  1888-10-16
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  [NM023003], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, October 19th, 1888

  1888-10-19
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  [NM023006], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, October 21st, 1888

  1888-10-21
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  [NM023006A], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, October 22nd, 1888

  1888-10-22
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  [NM023011], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, October 23rd, 1888

  1888-10-23
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  [NM023013], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, November 4th, 1888

  1888-11-04
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  [NM023015], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, November 5th, 1888

  1888-11-05
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  [NM023019], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, November 8th, 1888

  1888-11-08
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  [NM023042], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, November 28th, 1888

  1888-11-28
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  [NM023045], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, November 27th, 1888

  1888-11-27
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  [NM023054A], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, December 12th, 1888

  1888-12-12
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  [NM023054B], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, December 13th, 1888

  1888-12-13
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  [NM023116], Technical Note, Charles Summer Wirt, Arthur Edwin Kennelly, May 22nd, 1889

  1889-05-22
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  [NM023167], Technical Note, Arthur Edwin Kennelly, Charles Summer Wirt, July 25th, 1889

  1889-07-25
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  [NS8798BAE], Technical Note, Charles Summer Wirt, August 12th, 1889

  1889-08-12