[With]: Autographed letter signed by De Quincey to "the Prof" (?). 2 pages, 8vo, with small paper reinforcement along inner margin. "...I regret to cause what may seem superfluous trouble; and I wish therefore, though dreadfully ... to explain that it is not superfluous. I have marked in the margin, as changes that I wished for, these two trounerd to beginn as 'trounerd' -- and cleaned out as 'cleaned out'. The reason being briefly this: both cases belong to the slang vocabulary. Now this paper ... was originally written for Blackwood, in which journal ... an occasional use of street slang was not out of harmony. But perhaps, on republishing any paper from that journal, especially when the subject happens to be a gross(?) one, it may be better to weed out such confusions (?) -- or to indicate them as borrowed..." T.deQ.