Thoreau writes in his journal:
Ralph Waldo Emerson writes to Thoreau:
I give you a little list of names of good men whom you may chance to see on your road. If you come into the neighborhood of any of them, I pray you to hand this note to them, by way of introduction, praying them, from me, not to let you pass by, without salutation, and any aid and comfort they can administer to an invalid traveler, one so dear and valued by me and all good Americans.
Yours faithfully
R. W Emerson