... Credence—entire credence—he would gladly have lent to a communication purporting to come, through his guileless Quaker friend, Isaac Post of Rochester, N. Y., from the spirit of N. P. Rogers , who died in 1846. He first heard of this from William C. Nell, a colored Bostonian temporarily assisting Frederick Douglass with his paper. He reprinted it in May, 1852, from Friend Post's Vo...