Book 20 of Nuclear Studies:
This is a great, short little read as to the events leading up to and just after the dropping of the atomic bomb on Hiroshima and Nagasaki. It’s by far the smallest book I own on the subject, but packed with far more information than I expected.
One of, what I think, the best parts of it is is that the book was written only about 15 years after the relevant events. At the beginning, the authors disclose their reliance on primary sources and lament that there were some government documents which they were not permitted to research. Many of my other books on the subject reference this one as a source in their bibliographies, and it is certainly a valuable one, full of interesting and colorful anecdotes and quotes from the people involved.
If you’re interested in a full history of this historical event, but don’t want to commit to one of the longer reads, I would highly recommend this book to you.