[N030027], Technical Note, Charles Batchelor, April 9th, 1879

https://edisondigital.rutgers.edu/document/N030027

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Title

[N030027], Technical Note, Charles Batchelor, April 9th, 1879

Editor's Notes

more chalk tests

Date

1879-04-09

Decade

1870-1879

Subject

Folder/Volume ID

N030-F

Microfilm ID

31:907

Document ID

N030027

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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