[N106135A], Technical Note, Alexander Welsh, December 15th, 1880

https://edisondigital.rutgers.edu/document/N106135A

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Title

[N106135A], Technical Note, Alexander Welsh, December 15th, 1880

Editor's Notes

"from this day all regular carbons are to be distinguished as follows:" 6 inch=A; 3 inch=B; 2 in=C; 1 1/2=D.

Date

1880-12-15

Folder/Volume ID

N106-F

Microfilm ID

36:525

Document ID

N106135A

Publisher

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