Without being snide, the original request was for a single source that presented a comprehensive presentation of the theory of evolution. I'm sure a lot of creationists would be offended if I offered Ted Turner as an authority on the Bible.
Darwin is good if you understand that he stands in biology about where Maxwell does in physics.
Without being snide, your request for a single source would necessarily require some basic background knowledge. For those joining the topic for the first time or without a sufficient scientific background, these tomes will provide the core building blocks. Because so many of the strict evolutionists, Gould for instance, have been discredited, it is difficult to provide a comprehensive, intelligent-design-free suggestion of a good book.
It is also disappointing to see the entire list dismissed out of hand because of the inclusion of Darwin. It is important to study the history of the discovery of scientific theories to fully understand the later branches that any particulary theory takes.