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I could expand much upon the trade which could be brought to Bon Harbor, but feel conscious that I have perhaps already overgone the limits you intended me to occupy, and that I should close.

Yours very respectfully,

ROBERT TRIPLETT.

The annexed certificates as will be seen by the date, were given some years ago. The Bon Harbor coal has been constantly improving since, as will be seen by those that follow :

On Board Steam-boat Juniata, Aug. 15, 1842.

Capts. Jones and Thacker.   As I am anxious to make known the quality of my coal to captains of steam-boats and others, and as you have both tried it, you will oblige me by saying how it answers your purpose.

Your obedient servant,

ROBERT TRIPLETT.

(Answer.)

I believe it is equal to any coal that I have ever tried for steam-boat use, and I except none.

RESIN JONES.

I agree with Captain Jones, and think it superior to the Pittsburgh coal.

H. S. THACKER.

To similar inquiries a few years ago, the following answers were given in 1838 :

My opinion of the above coal is that it is equal, if not superior, to any coal I have ever used.

EDWARD WILLIAMS.