Senate Chamber, May 30, 1860.

DEAR SIR,—My duties here will not allow me to be with you at Buffalo; but I shall unite with you in every generous word uttered for Freedom, and in every pledge of enthusiastic support to the Republican candidates.

We have a Platform of noble principles, and candidates, each of whom, through his well-known principles and integrity of character, is a Platform in himself.

Accept my thanks for the honor of your invitation, and believe me, dear Sir,

Faithfully yours,

Charles Sumner.

A. W. Harvey, Esq.