Archive.org: The Internet Archive often has scanned copies available for digital "checkout," which is a great resource for researchers. Final Thoughts
Published in 2007, "A History of Us" is a ten-volume series that chronicles the history of the United States from the earliest Native American civilizations to the present day. The series was initially conceived as a textbook for middle school students, but its engaging narrative and comprehensive coverage have made it an invaluable resource for readers of all ages.
Remote Learning: With the rise of homeschooling and online academies, digital copies are easier for teachers to distribute and for students to submit assignments based on specific readings. The Educational Impact of Hakim’s Work