A letter introducing an Artist, a Lecturer, etc., should contain some allusion to the professional reputation of the bearer—thus:

—— —— ——

My dear Williamson:

This will be presented to you by our distinguished countryman, Mr. —— , who proposes a brief visit to your enterprising city, chiefly for professional purposes. It affords me great pleasure to be the means of securing to friends whom I so highly value, the gratification I feel assured you and Mr. —— will derive from knowing each other.

With the best wishes for your mutual success and happiness, I am, my dear sir,

Very truly yours,
—— ——.

To —— ——, Esq.

In the instance of a celebrity, occupying at the time a space in the world's eye, something like this will suffice:

Boston, August 1st, 1863.

My dear Friend: