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A SELECTIVE MICROFILM EDITION PART V (1911-1919)

Thomas E. Jeffrey Senior Editor

: ; Brian C. Shipley

Theresa M. Collins

Linda E, Endersby Editors

David A. Ranzan Indexing Editor

7 ; Janette Pardo i Richard Mizelle Peter Mikulas Indexers

Paul B. Israel — Director and General Editor

Sponsors Rutgers, The State University of New Jersey National Park Service, Edison National Historic Site ! New Jersey Historical Commission Smithsonian Institution

| A UPA Collection from | @ LexisNexis:

7500 Old Georgetown Road © Bethesda, MD 20814-6126

Edison signature used with permission of McGraw-Edison Company

Thomas A. Kciison Papers at Rutgers, The State University of New Jersey endorsed by National Historical Publicaticns and Records Commission 18 June 1981

All rights reserved. No part of this publication including any portion of the guide and index or of the microfilm may be reproduced, stored in a retrieval system, or transmitted in any form by any means—graphic, electronic, mechanical, or chemical, including photocopying, recording or taping, or information storage and r:trieval systems—without written permission of Rutgers, The State University of New Jersey, New Brunswick, New Jersey.

The original documents in this edition are from the archives at the Edison National Historic Site at West Orange, New Jersey.

ISBN 978 -9-88692-887-2

THOMAS A. EDISON PAPERS STAFF (2007)

Director and General Editor Paul Israel

Senior Editor Thomas Jeffrey

Associate Editors Louis Carlat Theresa Collins

Assistant Editor David Hochfelder

Indexing Editor David Ranzan

Consulting Editor Linda Endersby

Visiting Editor Amy Flanders

Editorial Assistants Alexandra Rimer Kelly Enright Eric Barry

Outreach and Development (Edison Across the Curriculum) Theresa Collins

Business Manager Rachel Weissenburger

BOARD OF SPONSORS (2007) Rutgers, The State University of New Jersey National Park Service Richard L. McCormick Maryanne Gerbauckas Ziva Galili Michelle Ortwein Ann Fabian : Paul Clemens Smithsonian Institution :

Harold Wallace

New Jersey Historical Commission Marc Mappen

EDITORIAL ADVISORY BOARD (2007)

Robert Friedel, University of Maryland Louis Galambos, Johns Hopkins University Susan Hockey, Oxford University Thomas P. Hughes, University of Pennsylvania Ronald Kline, Cornell University Robert Rosenberg, John Wiley & Sons Marc Rothenberg, Joseph Henry Papers, Smithsonian Institution Philip Scranton, Rutgers University/Hagley Museum H Merritt Roe Smith, Massachusetts Institute of Technology !

FINANCIAL CONTRIBUTORS

We thankfully acknowledge the vision and support of Rutgers University and the Thomas A. Edison Papers Board of Sponsors.

This edition was made possible by grant funds provided from the New Jersey Historical Commission, National Historical Publications and Records Commission, and The National Endowment for the Humanities. Major underwriting has been provided by the Barkley Fund, through the National Trust for the Humanities, and by The Charles Edison Foundation.

We are grateful for the generous support of the IEEE Foundation, the Hyde & Watson Foundation, the Martinson Family Foundation, and the GE Foundation. We acknowledge gifts from many other individuals, as well as an anonymous donor; the Association of Edison [uminating Companies; and the Edison Electric Institute. For the assistance of all these organizations and individuals, as well as for the indispensable aid of archivists, librarians, scholars, and collectors, the editors are most grateful.

A Note on the Sources The pages which have been filmed are the best copies available. Every technical effort possible has been made to ensure legibility.

PUBLICATION AND MICROFILM COPYING RESTRICTIONS

Reel duplication of the whole or of | any part of this film is prohibited. | In lieu of transcripts, however, | enlarged photocopies of selected

items contained on these reels

may be made in order to facilitate

research.

NOTEBOOK SERIES -_— NOTEBOOKS BY EXPERIMENTERS a OTHER THAN EDISON ;

|

Ses in ee eR os ote tte

Notebook Series -- Notebooks by Experimenters Other Than Edison Phonograph Record Experiments -- W. W. Dinwiddie Disc Books

These twelve notebooks relate to the work of William W. Dinwiddie and his assistants on the composition and manufacture of disc records during the years 1918-1920. The experiments are numbered from D1 through D821, although not all numbers have been used. Edison's involvement in the research is indicated primarily by the comments of other experimenters; there also infrequent notations and instructions in Edison's hand. Included are experiments aimed at producing the "perfect" record blank in terms of ingredients, varnishes, and the manufacturing process (mixing, pressing, baking, molding, and printing). Also included are occasional entries listing various chemicals and their characteristics or sources of supply, presumably to determine the best ones to use in the experiments.

Experiments by Dinwiddie that are related to, but not directly connected with, the "D" experiments are described in N-19-08-20 {not selected]. The entries in N-19-04-23.1, N-20-03-01.1, and N-20-04-12 [not selected] are by Dinwiddie's assistants, Henry G. Atkinson, W. R. Simpson, Henry E. Thayer, and John Weichmann. The notes also indicate the involvement of Charles T. Dally, E. E. Dougherty, Charles G. Kircher, Ludwig F. (Louis) Ott, and others. Some of the experiments involve the use of mixes prepared in the C. T. Dally Disc Blanks Composition Books. Some of the "D" blanks described in Dinwiddie's books were used for further experiments documented in Dally's books.

Four notebooks, representative of the work in the other books, have been selected for their numerous references to Edison's involvement in the experiments.

N-Number Labels and Inscriptions on Front Cover Selected Books

18-04-30 "Dinwiddie D-1 -- 100"; "Disc Records" 18-08-14 "Dinwiddie D-101 -- 200/++"

18-12-07 "Dinwiddie Varnish D-201 - Next book is 401 -"

19-01-10.1 "Dinwiddie D 401 --"; "Disc"

Books Not Selected

19-02-06 "Dinwiddie D-501 -- 597"; “Disc Records"

19-04-23.1 "W.R. Simpson Edison Laboratories"; "Disc Records"

19-05-20 "Dinwiddie 601 --"

19-08-20 "Clay 1919 W.W. Dinwiddie"

19-09-04 "Dinwiddie -- D 701 - 1919 & Stripping Nickel”

20-03-01.1 ---

20-04-12 "Henry George Atkinson. John Weichmann"; "Disc Records"

20-04-15 "Dinwiddie D-801 --"; “Disc Records"

Notebook Series -- Notebooks by Experimenters Other Than Edison Phonograph Record Experiments -- W. W. Dinwiddie Disc Books Notebook, N-18-04-30

This notebook was used by William W. Dinwiddie during April-July 1918 for notes relating to the production of the blanks and submasters used in the manufacture of disc records. Edison's supervision of this work is indicated by Dinwiddie's references to his suggestions and by lists of chemicals referred to as "Mr. Edison's." The experiments are numbered from D1 through D100. The entries indicate differing methods of preparation involving variations in the baking schedules and the use of different ingredients, combinations of ingredients, and varnishes. Most entries contain comments about the results of the experiments, including whether the disk was cracked, rough, too stiff, or stuck to plates and molds during printing process. Also included are references to varnish experiments and to "drop tests" that were performed to determine the durability of the experimental blanks and submasters. There are occasional lists of chemicals ("materials obtained in N.Y."), along with notations regarding their characteristics and sources of supply. The notes indicate that Frank Clancy, Charles T. Dally, Charles G. Kircher, and Ludwig F. (Louis) Ott worked with Dinwiddie on these or related experiments. The front cover is labeled "Dinwiddie D-1 — 100" and "Disc Records." The pages are unnumbered. Approximately 110 pages have been used.

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