A Natural Calling Life, Letters and Diaries of Charles Darwin and William Darwin Fox

From the reviews:
“Larkum (Univ. of Sydney, Australia) has structured this work around 155 letters … written by Charles Darwin to his second cousin, William Darwin Fox, from 1828 to 1880, the year of Fox’s death. Larkum supplements this treasure trove with a few surviving letters Fox wrote to Darwin, Fox’s letters to family members and other naturalists, and his diaries. … This book’s unique material will appeal to biologists and historians. Summing Up: Recommended. Graduate students and above.” (J. S. Schwartz, Choice, Vol. 47 (7), March, 2010)