Q. How do I display the full text of a book Princeton owns and that I found by searching Google Books or HathiTrust?

There are many reasons, both technical and legal, why a specific work may not be displayed in entirety in Google Books or HathiTrust. Works which appear to be in the public domain, but which are shown in briefer view, are frequently in the process of having one or more ambiguous aspects of their copyright status resolved, and there is no way to know when (or even whether) the current status will change. Furthermore, copyright regulations vary over time and between countries, which adds to the complexity.

If you need the full text of such a work, you should confer with a librarian about borrowing the original print volume via interlibrary loan.