XXI Texts

XXI Texts is a project to find textbooks that have entered the public domain, such as those published in the United States prior to 1923, and revise them to be relevant to students in the twenty-first century. While works that old from some disciplines are nothing more that historical curiosities, in other disciplines where basic knowledge has not changed for some time older textbooks can be surprisingly relevant.

The XXI Texts team is currently working on its first volume, Alfred Marshall's Principles of Economics.

This project is related to Great Books XXI.