[D8734ABG], Letter from Francis Robbins Upton to Thomas Alva Edison, December 28th, 1887

https://edisondigital.rutgers.edu/document/D8734ABG

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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."

Date

1887-12-28

Type

Folder/Volume ID

D8734-F

Microfilm ID

119:992

Document ID

D8734ABG

Publisher

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