[D8933AAQ], Letter from Leonard and Izard, Harry Ward Leonard to Thomas Alva Edison, February 25th, 1889

https://edisondigital.rutgers.edu/document/D8933AAQ

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Title

[D8933AAQ], Letter from Leonard and Izard, Harry Ward Leonard to Thomas Alva Edison, February 25th, 1889

Editor's Notes

Leonard & Izard####Mr. Thos A. Edison Dear Sir--###Enclosed are facts as to the life test at the C.B.& Q up to a few days since. Six of the special lamps which you sent to us by Mr. Upton were put in service at normal pressure as marked upon the lamp, and the average candles per electrical horse power are 200. At the end of about fifty hours they had fallen off about 3 candles, none had broken and the economy was still higher than the initial economy of the previously entered Edison lamps. Rush of very important business has made it impossible for me to get very definite information for the last few days, but will take an early opportunity to furnish you more exact information. I enclose a pamphlet which occasioned considerable amusement at the National Convention a few days since and which emanates from Freeman. A take-off on the Edison red book was also circulated. Johnson being the subject of attack in that case.####Yours very truly####1 enclosure####Harry Leonard####[Enclosure: Chart of Lamp Life Test, C.B. & Q. Ry. Co.]

Date

1889-02-25

Decade

1880-1889

Type

Folder/Volume ID

D8933-F

Microfilm ID

126:30

Document ID

D8933AAQ

Publisher

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