An online, free, and collaboratively-built textbook for college-level U.S. history courses written by current scholars. Current version has 2021-2022 updates.
This book carries a Creative Commons By-Share Alike license, which invites use and adaptation of the work as long as attribution is given to the original creators and any variations of the work are also made openly available. Fully update online version free for everyone to read. Print copy of 2019 edition available for $25.
The American Yawp by 
How History Is Made: a Student's Guide to Reading, Writing, and Thinking in the Discipline by 
