Thoreau writes in his journal:
Ralph Waldo Emerson notes in his journal that he sent a copy of his book Essays to “D. H Thoreau” and 47 other people. The inscription reads “Henry D. Thoreau, from his friend, R.W.E. 19 March 1841” (The Journals and Miscellaneous Notebooks of Ralph Waldo Emerson, 7:546; Studies in the American Renaissance 1983, 161).
See 21 March.