[D8807AAF], Letter from Scientific American, George Milton Hopkins to Thomas Alva Edison, February 4th, 1888
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Title
[D8807AAF], Letter from Scientific American, George Milton Hopkins to Thomas Alva Edison, February 4th, 1888
Editor's Notes
I have tried to get the date of the phonoplex patents through the telephone but have not received. We want more information as in the construction of the instruments. Will you please give dates of patents or send description of the mechanical construction and oblige.
Recipient
Date
1888-02-04
Type
Folder/Volume ID
D8807-F
Microfilm ID
121:687
Document ID
D8807AAF
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University