Scope and Content From the Collection: This collection consists of a letter written in 1855 by Henry David Thoreau to Mrs. Brown, possibly the wife of Simon Brown, Lieutenant Governor of Massachusetts.Transcription of the letter: Concord Feb. 29th '55Mrs. Brown, Dear Madam, Though I failed to recognise you last eve- ning in the dusky entry, I assure you that I have not forgotten a pleasant call which I made at your house some years...