M. J. WILLIAMS.

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MILFORD, DEL., May 4th, 1888.

Dear Sirs:—This is to say that I have used several thousand

shingles of Walter’s Patent on our roof at the Phosphate

Factory, put on by W. P. Cullen, and up to this time not a

single drop of water or a weight of snow has drifted through

it, and if kept properly painted, I believe the roof will last

as long as any person could wish it to.