Richard Broke Freeman (1 April 1915 – 1 September 1986) was a zoologist, historian of zoology, bibliographer of natural history and book collector. Known professionally as R. B. Freeman, he compiled comprehensive reference works on Charles Darwin and on P. H. Gosse. He was “a meticulous scholar” and a “brilliant bibliographer” who showed “a genuine modesty about his great erudition.” "It is darkly rumored among antiquarian booksellers that R. B. Freeman once missed a completely unrecorded and absurdly rare 1859 second issue of the first edition of The Origin of Species", a reviewer wrote in the Times Literary Supplement, "but this is also said to be the only mistake he has made during a lifetime of persistent scholarship and imaginative detective work in libraries, bookshops, sale-rooms, t