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The Correspondence of Charles Darwin. Vol. 9: 1861History and Philosophy of the Life Sciences 17 (1): 173. 1995.
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Book notices-Charles darwins briefwechsel mit deutschen naturforschern. Ein kalendarium mit inhaltsangaben, biographischem register und bibliographieHistory and Philosophy of the Life Sciences 20 (1): 125-125. 1998.
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The Correspondence of Charles Darwin, Volume 8, 1860History and Philosophy of the Life Sciences 16 (2): 355. 1994.
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Charles Darwin's Zoology Notes and Specimen Lists from HMS Beagle (review)British Journal for the History of Science 34 (1): 97-124. 2001.