More Letters of Charles Darwin $1 (BVolume 2 :s A Record of His Work in a Series of Hitherto Unpublished Letters - Darwin, Charles, 1809-1882; Seward, A. C. (Albert Charles), 1863-1941; Darwin, Francis, Sir, 1848-1925 (Project Gutenberg, 2001)
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Keywords: Evolution (Biology); Naturalists -- Great Britain -- Correspondence; Darwin, Charles, 1809-1882 -- Correspondence