Thoreau writes in his journal:
Dear Sir
You will find herein the thing you wanted to know. Mr. Whitfield is very well posted about the country and what he says is reliable. I hope you will have a pleasant time get heartily well and write a book about the great West that will be to us what your other books are. A friend, I want you to stop in Chicago as you come back if it can be possible, and be my guest a few days. I should be very much pleased to have you take a rest and feel at home with us, and if you do please write in time so that I shall be sure to be at home.
I am very truly
Robert Collyer
Collyer later recalls a visit with Thoreau:
As I remember Henry Thoreau then, he was something over forty years of age but would have easily passed for thirty-five, and he was rather slender, but of a fine delicate mold, and with a presence which touched you with the sense of perfect purity as newly opened roses do. It is a clear rose-tinted face he turns to me through the mist of all these years, and delicate to look on as the face of a girl; also he had great gray eyes, the seer’s eyes full of quiet sunshine. But it is a strong face, too, and the nose is especially notable, being as Conway said to me once of Emerson’s nose, a sort of interrogation mark to the universe. His voice was low, but still sweet in the tones and inflections, though the organs were all in revolt just then and wasting away and he was making for the great tablelands beyond us Westwards, to see if he could not find there a new lease of life. His words also were as distinct and true to the ear as those of a great singer, and he had Tennyson’s splendid gift in this, that he never went back on his tracks to pick up the fallen loops of a sentence as commonplace talkers do. He would hesitate for an instant now and then, waiting for the right word, or would pause with a pathetic patience to master the trouble in his chest, but when he was through the sentence was perfect and entire, lacking nothing, and the word was so purely one with the man that when I read his books now and then I do not hear my own voice within my reading but the voice I heard that day.
This is the picture I treasure of Henry Thoreau as I saw him in my own house the year before he died.