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

Item

Abstract

"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

Decade

1880-1889

Type

Identifier

D8734ABG

Folder Set

D8734

Title

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

Microfilm ID

119:992

Publisher

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