[D7905A], Letter from P Chr Madsen to Thomas Alva Edison, February 9th, 1879
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Title
[D7905A], Letter from P Chr Madsen to Thomas Alva Edison, February 9th, 1879
Editor's Notes
Copenhagen correspondent replies to TAE letter concerning current, heat & expansion of ink; maybe ink could be substituted in carbon telephone.
Author
Recipient
Date
1879-02-09
Type
Folder/Volume ID
D7905-F
Microfilm ID
49:602
Document ID
D7905A
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University