[D8734ABG], Letter from Francis Robbins Upton to Thomas Alva Edison, December 28th, 1887
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Title
[D8734ABG], Letter from Francis Robbins Upton to Thomas Alva Edison, December 28th, 1887
Editor's Notes
"We have been running about a year on a slow running pump taking off 9 runs a day. ## Are you absolutely sure that this form of pump is better than the quick working pump from which 11 runs can be taken off daily at the same expense? ## You will remember that we changed when you were working regarding mercury vapors."
Author
Recipient
Date
1887-12-28
Type
Subject
Folder/Volume ID
D8734-F
Microfilm ID
119:992
Document ID
D8734ABG
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University