Ask HN: What, in your opinion, are the greatest and most useful textbooks?

For self-education from books, textbooks are essential. They are literally designed to convey information on a subject to students. But there are a lot of textbooks. Which ones are the best?

Preliminary research has suggested Spivak is best for Calculus. SICP is another famous one I've heard of. What about Physics, Biology, Chemistry, Anatomy, History?

Any contributions to this list are much appreciated.