This textbook is an adaptation of the OpenStax US History textbook. It is available on OpenStax for reading in their interface, downloading as an app or PDF, and even ordering a print copy. The edition of the textbook here on my website is adapted and excerpted for the purposes of a high school US History course, so if you use the OpenStax edition you won't have my excerpts, and you may miss out on additional information where I do add it. If you are ever looking for more detail or context, you can likely find it there.1
All of your reading assignments will be available here.