To John William Parker1 5 May 
Down Farnborough Kent
May 5t h
As an author of some Scientific works, I beg to express strongly my opinion, that, both for the advantage of Authors & the public, Booksellers like other dealers ought to settle, each for himself, the Retail price.2
Sir | Your obedt sert. | Charles Darwin
As an author of some scientific works CD is of the opinion that each bookseller should settle, each for himself, the retail price.
Please cite as
Darwin Correspondence Project, “Letter no. 1480A,” accessed on 26 September 2016, http://www.darwinproject.ac.uk/DCP-LETT-1480A