| Chicago, November 6, 1897. |
American Luxfer Prism Co., Chicago.
Gentlemen:
We are entirely satisfied with your Prism
lights in our general offices. We have dispensed with a large
number of artificial lights, which we formerly required all of the
time, and our employes do more and better work under daylight than
before.
We consider your product one of the great
inventions of this very practical era in which economy is the
watchword.
Yours very truly,
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