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Emile Berliner in mirrors - Public domain portrait print

Emile Berliner in mirrors - Public domain portrait print

Originally grouped in Brown Berliner photo box, item 19. Title taken from list description: "Emile Berliner in Mirrors"

Group portrait of Emile Berliner and others

Group portrait of Emile Berliner and others

Mounted on cardboard. Originally housed in Joseph Sanders Collection Box 5.

[Emile Berliner, with the model of the first phonograph machine which he invented]

[Emile Berliner, with the model of the first phonograph machine which ...

Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berliner worked in the telegraph industry experim... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Louise Berliner, three-quarter length portrait, facing forward, wearing large hat

Louise Berliner, three-quarter length portrait, facing forward, wearin...

Public domain scan of a female portrait, woman, free to use, no copyright restrictions image - Picryl description Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best know... More

Emile and Cora Berliner - Public domain portrait print

Emile and Cora Berliner - Public domain portrait print

Title taken from Brown Berliner photo box list. Originally grouped in Brown Berliner photo box, item 17.

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Berliner family motion picture - Public domain historic place photograph

Berliner family motion picture - Public domain historic place photogra...

Originally housed in Joseph Sanders Collection Box 5. Mounted on card. Smaller print of item 120010303.

Emile and Joseph Berliner, shaking hands

Emile and Joseph Berliner, shaking hands

Mounted on cardboard. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Portrait of Emile Berliner in later years

Portrait of Emile Berliner in later years

Copy 1. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Emile Berliner, seated and facing right in group portrait with two children

Emile Berliner, seated and facing right in group portrait with two chi...

Originally housed in Joseph Sanders Collection Box 5. Originally mounted cardboard and paper frame.

Portrait photo of Cora Berliner? seated in automobile

Portrait photo of Cora Berliner? seated in automobile

Mounted on board. Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berliner worked in the telegra... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Emile Berliner, half-length portrait, standing in doorway, facing left

Emile Berliner, half-length portrait, standing in doorway, facing left

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

Letter from J. W. Hyatt to E. Berliner 1888 August 25

Letter from J. W. Hyatt to E. Berliner 1888 August 25

With original envelope. Letter from J. W. Hyatt to E. Berliner regarding the pressing of discs from Berliner's zinc master.

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain scan - children, free to use, no copyright restrictions image - Picryl description

Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882." Written on Ame... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Emile Berliner, three-quarter length portrait, facing right, looking down at gramophone

Emile Berliner, three-quarter length portrait, facing right, looking d...

Originally housed in Illustrations folder. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Louise Berliner, full-length portrait, standing on deck of ship

Louise Berliner, full-length portrait, standing on deck of ship

Verso: "Louise - then - Frank about 1927" Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berlin... More

Robert Berliner Frank, three-quarter length portrait, in flight suit, standing next to plane

Robert Berliner Frank, three-quarter length portrait, in flight suit, ...

Picryl description: Public domain image of a pilot, aviator, aircraft, free to use, no copyright restrictions. Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known f... More

Louise Berliner, full-length portrait, as a child

Louise Berliner, full-length portrait, as a child

Mounted on board. Written on front: "CM Gilbert" Verso: "Louise, High Art Photography, Gilbert Studios, 926 Chestnut St., Philada, cor. F & Eleventh St., Washington, D.C., Atlantic City, N.J." Emile Berliner 1... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - military portrait, armed forces officer, leader, commander, 19th century, free to use, no copyright restrictions... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - group portrait, 20th century, free to use, no copyright restrictions image - Picryl description

Group portrait of children, including Louise Berliner

Group portrait of children, including Louise Berliner

Mounted on cardboard. Originally housed in Joseph Sanders Collection Box 5. Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc... More

[Emile Berliner, full-length portrait, standing, facing left] / Underwood & Underwood.

[Emile Berliner, full-length portrait, standing, facing left] / Underw...

Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berliner worked in the telegraph industry experim... More

Emile Berliner reaches 75 today

Emile Berliner reaches 75 today

Copy 3. Copyright Washington Post; reprinted by permission of the D.C. Public Library, [email protected].

Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882." Written on Ame... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Emile Berliner, full length portrait, facing left

Emile Berliner, full length portrait, facing left

Originally housed in Joseph Sanders Collection Box 5. Mounted on cardboard labeled Bachrach & Bro, Baltimore, Md, Washington, D.C.

Emile Berliner, bust portrait, facing slightly right

Emile Berliner, bust portrait, facing slightly right

Mounted on cardboard. Originally housed in Joseph Sanders Collection Box 5.

Emile Berliner and veiled woman in automobile

Emile Berliner and veiled woman in automobile

Public domain photograph of an automobile, 1910s car, free to use, no copyright restrictions image - Picryl description

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Emile Berliner with the Health Committee including Dr. Harvey W. Wiley and Dr. George M. Kober at a class of underfed children

Emile Berliner with the Health Committee including Dr. Harvey W. Wiley...

Attached caption: "Emile Berliner with the Health Committee including Fr. Harvey W. Wiley and Dr. Geo. M. Kober at a class of underfed children."

Louise Berliner and Milton King, in later years, in formal dress

Louise Berliner and Milton King, in later years, in formal dress

Verso: "Louise & Milton King." Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berliner worked i... More

Letter from John J. Carty of American Telephone and Telegraph Company to Emile Berliner, 1923 June 21

Letter from John J. Carty of American Telephone and Telegraph Company ...

Letter soliciting Berliner's assistance in putting together a collection on the history of the telephone. Courtesy AT&T, AT&T Archives

Emile and Joseph? Berliner, portrait with unidentified man

Emile and Joseph? Berliner, portrait with unidentified man

Originally housed in Joseph Sanders Collection Box 5. Mounted on cardboard frame. verso: "Verpflichtungs-Schien. Fur die Ihen gelieferten Kohle- oder sog. Pigmentbilder ubernehme..."

Emile Berliner motion picture - Newspaper, public domain, Library of Congress

Emile Berliner motion picture - Newspaper, public domain, Library of C...

Copy 1. Reprinted with permission from Washingtonpost.Newsweek Interactive Company, The Washington Post and washingtonpost.com.

Silence on the air honor to Berliner, radio benefactor

Silence on the air honor to Berliner, radio benefactor

Copyright Washington Post; reprinted by permission of the D.C. Public Library

Letter from Emile Berliner to Jacob Berliner, 1883 March 5

Letter from Emile Berliner to Jacob Berliner, 1883 March 5

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Document #5 (?), Emile Berliner's letters (7) to his brother Jacob in Hannover. March 5, 1883."

Memorandum dated 1923 August 6 in connection with Mr. Berliner's notes on the Blake Transmitter, July 31, 1923

Memorandum dated 1923 August 6 in connection with Mr. Berliner's notes...

Memorandum detailing Emile Berliners contributions to the development of the Blake Transmitter, written by his assistant at the time, W. L. Richards.

Telegram from Emile Berliner to Roy M. Allen, 1926 Nov. 11
Telegram from Emile Berliner to Roy M. Allen, 1926 Nov. 11
Letter from Emile Berliner to W. L. Richards, 1926 Nov. 15
Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner to Jacob Berliner, 1882 July 10

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882." Written on Ame... More

Journal of Cora A. Berliner copy

Journal of Cora A. Berliner copy

Copy 1. Cora A. Berliner's journal of her family's trip on board a steamer to Germany and their subsequent extended stay with Emile Berliner's family. Typewritten copy of Cora A. Berliner's journal.

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Freeing the human voice from its inherent limitations

Freeing the human voice from its inherent limitations

Vol. 6, No. 2. An essay of Berliner's life and his accomplishments.

The man who made the mike, Emile Berliner radio broadcasting collection

The man who made the mike, Emile Berliner radio broadcasting collectio...

Copy 2. Outlines Emile Berliner's accomplishments.

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Emile Berliner, in later years, reading letter on porch

Emile Berliner, in later years, reading letter on porch

Originally housed in Joseph Sanders Collection Box 5. Mounted on cardboard. Verso: "Steig & Brown, Inc. Commercial Photographers, Blue Printing, 931 F..."

Portrait of Emile Berliner as a young man

Portrait of Emile Berliner as a young man

Mounted on card. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

E. B. in U. S. National Museum holding the microphone used April 8, 1877

E. B. in U. S. National Museum holding the microphone used April 8, 18...

On front: "Underwood & Underwood, Inc. Washington". Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Berliner in front of microphone at WRC Broadcasting Station, Wash. D.C

Berliner in front of microphone at WRC Broadcasting Station, Wash. D.C

Copy 1. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Letter from Emile Berliner to Roy M. Allen, 1926 Nov. 4
Letter from Roy M. Allen to Emile Berliner, 1926 Nov. 11
Letter from Emile Berliner to Roy M. Allan (sic), 1926 Oct. 12
Berliner left $100,000 to Health Bureau

Berliner left $100,000 to Health Bureau

Public domain scan of newspaper clippings. Free to use, no copyright restrictions image - Picryl description.

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Telegram draft? from Emile Berliner to Roy M. Allan (sic), 1926 Oct. 26
Letter from W. L. Richards to Emile Berliner, 1926 Nov. 11

Letter from W. L. Richards to Emile Berliner, 1926 Nov. 11

Bell Telephone Laboratories letterhead. Letter from W. L. Richards detailing his suggested corrections to a book (or manuscript?) Berliner had written and sent to him for his approval.

Journal of Cora A. Berliner copy

Journal of Cora A. Berliner copy

Copy 1. Cora A. Berliner's journal of her family's trip on board a steamer to Germany and their subsequent extended stay with Emile Berliner's family. Typewritten copy of Cora A. Berliner's journal.

Letter from Thomas D. Lockwood to Emile Berliner, 1922 July 5

Letter from Thomas D. Lockwood to Emile Berliner, 1922 July 5

Reply to a letter from Berliner of July 1, 1922?.

Letter from John J. Carty of American Telephone and Telegraph Company to Emile Berliner, 1923 June 29

Letter from John J. Carty of American Telephone and Telegraph Company ...

Letter soliciting Berliner's assistance in putting together a collection on the history of the telephone. Courtesy AT&T, AT&T Archives

Memorandum dated 1923 August 6 in connection with Mr. Berliner's notes on the Blake Transmitter, July 31, 1923

Memorandum dated 1923 August 6 in connection with Mr. Berliner's notes...

Memorandum detailing Emile Berliners contributions to the development of the Blake Transmitter, written by his assistant at the time, W. L. Richards.

Telegram from Emile Berliner to Roy M. Allan (sic), 1926 Oct. 23?

Telegram from Emile Berliner to Roy M. Allan (sic), 1926 Oct. 23?

Date taken from context and sequence of letters.

Friends of the radio audience, Emile Berliner radio broadcasting collection

Friends of the radio audience, Emile Berliner radio broadcasting colle...

Handwritten note at top of leaf 1: "at W.R.C., evening Apr 14, 1927." Typescript. Speech about Berliner's invention of the microphone.

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Letter from Emile Berliner to Jacob Berliner, 1882 August 22

Letter from Emile Berliner to Jacob Berliner, 1882 August 22

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882." Written on Ame... More

Letter from Emile Berliner to Jacob Berliner, 1882 March 20

Letter from Emile Berliner to Jacob Berliner, 1882 March 20

Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882." Includes note from Cora Berliner in English on p.7-8. Letter from Emil... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Letter from Alfred C. Clark to Emile Berliner, 1896 Oct. 16

Letter from Alfred C. Clark to Emile Berliner, 1896 Oct. 16

Envelopes labeled, "I", "II", "IV", "Sapphire" & "Ruby". "Ruby" is empty. Accompanied by xerox of letter, and envelope from the laboratory of Emile Berliner labeled: "Letter from Alfred C. Clark, Oct. 16, 1896.... More

Freeing the human voice from its inherent limitations

Freeing the human voice from its inherent limitations

Vol. 6, No. 2. An essay of Berliner's life and his accomplishments.

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Journal, Cora A. Berliner - Public domain document scan of drawing

Journal, Cora A. Berliner - Public domain document scan of drawing

Handwritten; only 38 p. contain writing; 8 loose p. inserted into journal. Contains inserted pencil drawing of Dr. Thaene by Emile Berliner. Cora A. Berliner's journal of her family's trip on board a steamer to... More

Portrait photo of Photograph album, ca. 1918-1923

Portrait photo of Photograph album, ca. 1918-1923

Album of personal photographs. Includes Berliner, family and friends. Public domain photograph - Portrait, United States, free to use, no copyright restrictions image - Picryl description

Emile Berliner in laboratory working on gramophone disc

Emile Berliner in laboratory working on gramophone disc

Copy 2. Verso: "Credit Line Rice Montreal (Please see that Credit Line is used when print is published otherwise publishing rights are reserved.)"

Two exposures of Emile Berliner holding child, standing in front of automobile

Two exposures of Emile Berliner holding child, standing in front of au...

Originally housed in Joseph Sanders Collection Box 5. Public domain photograph of a car, automobile, free to use, no copyright restrictions image - Picryl description

Emile Berliner ca. 1875 - Public domain portrait photograph

Emile Berliner ca. 1875 - Public domain portrait photograph

Title taken from Brown Berliner photo box list. Originally grouped in Brown Berliner photo box, item 21.

Emile Berliner, head-and-shoulders portrait, facing left

Emile Berliner, head-and-shoulders portrait, facing left

Mounted on card. Verso: "Emile Berliner e. 1881." Printed on front: "Bishop. 905 Penna. Ave., N.W. Washington, D.C."

Emile Berliner motion picture, Emile Berliner radio broadcasting collection
Louise Berliner, head-and-shoulder portrait, in a composite photograph of several young women

Louise Berliner, head-and-shoulder portrait, in a composite photograph...

Printed on front: "Edmunston Studios" Verso: "Louise" Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramop... More

Group of young women, including Louise Berliner, in school uniforms

Group of young women, including Louise Berliner, in school uniforms

Verso: "#12, Louise Berliner Frank King". Emile Berliner 1851 – 1929 was a German-born American inventor and businessman. He is best known for his development of the flat disc record and the Gramophone. Berlin... More

Emile Berliner standing in garden walkway

Emile Berliner standing in garden walkway

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

Letter from Edgar Berliner to Emile Berliner, 1922 May 29

Letter from Edgar Berliner to Emile Berliner, 1922 May 29

Letter written on Berliner Gram-o-phone Company Limited (Montreal) letterhead. This letter accompanied letter from Wm. Meadowcroft (5/26/1922), which Edgar sent along to his father. Letter from Edgar Berliner t... More

Emile Berliner standing with two women in garden walkway

Emile Berliner standing with two women in garden walkway

Public domain photo of 19th-century portrait photograph, free to use, no copyright restrictions image - Picryl description

Letter from Emile Berliner to Roy M. Allen, 1926 Nov. 24
Emile Berliner, famous inventor, dies after stroke

Emile Berliner, famous inventor, dies after stroke

Copy 1. Copyright Washington Post; reprinted by permission of the D.C. Public Library

Berliner left $1,527,573 motion picture

Berliner left $1,527,573 motion picture

Public domain scan of newspaper clippings. Free to use, no copyright restrictions image - Picryl description.

Letter from J. W. Hyatt to E. Berliner 1888 September 17

Letter from J. W. Hyatt to E. Berliner 1888 September 17

With original envelope. Letter from J. W. Hyatt to E. Berliner regarding the pressing of discs from Berliner's zinc master. Briefly touches on potential materials to use.

Letter from Emile Berliner to Roy M. Allen, 1926 Nov. 18
Emile Berliner motion picture, Emile Berliner radio broadcasting collection
Letter from Emile Berliner to Jacob Berliner, 1882 September 24

Letter from Emile Berliner to Jacob Berliner, 1882 September 24

Letter from Emile Berliner in Boston to Jacob Berliner. Formerly in mylar sleeve labeled: "Documents #4, Emile Berliner's letters (7) to his brother Jacob in Hannover, January through Oct. 1882."

Letter from Roy M. Allen to Emile Berliner, 1926 Nov. 17

Letter from Roy M. Allen to Emile Berliner, 1926 Nov. 17

Allen's sketch of microphonic air-gap at the bottom of page 3. Continues with a handwritten postscript on p. 4. Contains Allen's thoughts on the proposed article for which he and Berliner have been trying to ca... More

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