Items

Items

• 

  [E1929CL], Letter from Frank Detlef, Jr. to Edison (Thomas A.) Inc, July 26th, 1919

  1919-07-26
• 

  [E1929CT], Letter from Frank Detlef, Jr. to William Henry Meadowcroft, July 30th, 1919

  1919-07-30
• 

  [E1929CW], Letter from Frank Detlef, Jr. to William Henry Meadowcroft, August 2nd, 1919

  1919-08-02
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  [NA342001], Technical Note, Frank Detlef, Jr., Thomas Alva Edison, Walter Nadler Archer, June 1920

  1920-06-00
• No image

  [NA342043], Technical Note, Walter Nadler Archer, Thomas Alva Edison, Frank Detlef, Jr., July 1920

  1920-07-00
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  [NA342085], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 27th, 1920

  1920-12-27
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  [NA342087], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., December 28th, 1920

  1920-12-28
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  [NA342091], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., December 29th, 1920

  1920-12-29
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  [NA342093], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., December 30th, 1920

  1920-12-30
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  [NA342095], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 31st, 1920

  1920-12-31
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  [NA342097], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 4th, 1921

  1921-01-04
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  [NA342100], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 5th, 1921

  1921-01-05
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  [NA342102], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 6th, 1921

  1921-01-06
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  [NA342103], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 7th, 1921

  1921-01-07
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  [NA342105], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 8th, 1921

  1921-01-08
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  [NA342106], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 10th, 1921

  1921-01-10
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  [NA342107], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 11th, 1921

  1921-01-11
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  [NA342108], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 12th, 1921

  1921-01-12
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  [NA342109], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 13th, 1921

  1921-01-13
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  [NA342110], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 14th, 1921

  1921-01-14
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  [NA342112], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 15th, 1921

  1921-01-15
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  [NA342113], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 17th, 1921

  1921-01-17
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  [NA342114], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 18th, 1921

  1921-01-18
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  [NA342115], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 19th, 1921

  1921-01-19
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  [NA342116], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 20th, 1921

  1921-01-20
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  [NA342117], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 24th, 1921

  1921-01-24
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  [NA342118], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., January 25th, 1921

  1921-01-25
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  [NA342121], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 2nd, 1921

  1921-02-02
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  [NA342122], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., February 3rd, 1921

  1921-02-03
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  [NA342123], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., February 4th, 1921

  1921-02-04
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  [NA342124], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., February 5th, 1921

  1921-02-05
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  [NA342125], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, February 8th, 1921

  1921-02-08
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  [NA342127], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 9th, 1921

  1921-02-09
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  [NA342128], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 10th, 1921

  1921-02-10
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  [NA342130], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, February 11th, 1921

  1921-02-11
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  [NA342132], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 13th, 1921

  1921-02-13
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  [NA342133], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 15th, 1921

  1921-02-15
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  [NA342134], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, February 17th, 1921

  1921-02-17
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  [NA342135], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 18th, 1921

  1921-02-18
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  [NA342136], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 21st, 1921

  1921-02-21
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  [NA342137], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, February 23rd, 1921

  1921-02-23
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  [NA342138], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, February 24th, 1921

  1921-02-24
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  [NA342139], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, March 1st, 1921

  1921-03-01
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  [NA342143], Technical Note, Frank Detlef, Jr., Howard F Redford, March 2nd, 1921

  1921-03-02
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  [NA342150], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, March 4th, 1921

  1921-03-04
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  [NA342152], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 5th, 1921

  1921-03-05
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  [NA342155], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 8th, 1921

  1921-03-08
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  [NA342156], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, March 9th, 1921

  1921-03-09
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  [NA342160], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 10th, 1921

  1921-03-10
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  [NA342161], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 11th, 1921

  1921-03-11
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  [NA342165], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, March 12th, 1921

  1921-03-12
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  [NA342169], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 14th, 1921

  1921-03-14
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  [NA342171], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 15th, 1921

  1921-03-15
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  [NA342173], Technical Note, Howard F Redford, Frank Detlef, Jr., Walter Nadler Archer, March 16th, 1921

  1921-03-16
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  [NA342178], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 17th, 1921

  1921-03-17
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  [NA342180], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., Howard F Redford, March 18th, 1921

  1921-03-18
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  [NA342AAA], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 27th, 1920

  1920-12-27
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  [NA342AAB], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 28th, 1920

  1920-12-28
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  [NA342AAC], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 29th, 1920

  1920-12-29
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  [NA342AAD], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 30th, 1920

  1920-12-30
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  [NA342AAE], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, December 31st, 1920

  1920-12-31
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  [NA342AAF], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 3rd, 1921

  1921-01-03
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  [NA342AAG], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 4th, 1921

  1921-01-04
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  [NA342AAH], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 6th, 1921

  1921-01-06
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  [NA342AAI], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 7th, 1921

  1921-01-07
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  [NA342AAJ], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 8th, 1921

  1921-01-08
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  [NA342AAK], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 10th, 1921

  1921-01-10
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  [NA342AAL], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 11th, 1921

  1921-01-11
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  [NA342AAM], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 13th, 1921

  1921-01-13
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  [NA342AAN], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 14th, 1921

  1921-01-14
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  [NA342AAO], Technical Note, Frederick Paul Ott, Frank Detlef, Jr., Walter Nadler Archer, January 15th, 1921

  1921-01-15
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  [NA342AAP], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 17th, 1921

  1921-01-17
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  [NA342AAQ], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 18th, 1921

  1921-01-18
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  [NA342AAR], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 19th, 1921

  1921-01-19
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  [NA342AAS], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 20th, 1921

  1921-01-20
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  [NA342AAT], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 21st, 1921

  1921-01-21
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  [NA342AAV], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 24th, 1921

  1921-01-24
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  [NA342AAW], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 26th, 1921

  1921-01-26
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  [NA342AAX], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 28th, 1921

  1921-01-28
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  [NA342AAY], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, January 31st, 1921

  1921-01-31
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  [NA342AAY1], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 1st, 1921

  1921-02-01
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  [NA342AAY2], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 2nd, 1921

  1921-02-02
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  [NA342AAZ], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 3rd, 1921

  1921-02-03
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  [NA342ABA], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 4th, 1921

  1921-02-04
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  [NA342ABB], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 7th, 1921

  1921-02-07
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  [NA342ABC], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 10th, 1921

  1921-02-10
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  [NA342ABD], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 11th, 1921

  1921-02-11
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  [NA342ABE], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, February 12th, 1921

  1921-02-12
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  [NA342ABM], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, March 8th, 1921

  1921-03-08
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  [NA342ABY] Technical Note, 1920-1921

  1920-1921
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  [NA343001], Technical Note, Walter Nadler Archer, Thomas Alva Edison, Frank Detlef, Jr., June 1920

• No image

  [NA343027], Technical Note, Walter Nadler Archer, Thomas Alva Edison, Frank Detlef, Jr., July 1920

  1920-07-00
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  [NA343069], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, August 1920

  1920-08-00
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  [NA343081], Technical Note, Walter Nadler Archer, Frank Detlef, Jr., November 1920

  1920-11-00
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  [NA343133], Technical Note, Irving Adelsohn, Frank Detlef, Jr., Walter Nadler Archer, December 1920

  1920-12-00
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  [NA343AAA], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, November 19th, 1920

  1920-11-19
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  [NA343AAD], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, November 24th, 1920

  1920-11-24
• No image

  [NA343AAE], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, November 26th, 1920

  1920-11-26
• No image

  [NA343AAJ], Technical Note, Frank Detlef, Jr., Walter Nadler Archer, November 30th, 1920

  1920-11-30
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  [NA343AAK], Technical Note, Frank Detlef, Jr., Irving Adelsohn, Walter Nadler Archer, December 2nd, 1920

  1920-12-02