Sometimes books have a stamp inside stating, “The book has been digitized and is available online.” However, sometimes volumes that have been digitized aren't available online.

This is because they are still under copyright. When the volumes were scanned for the library's digitization project they were all stamped with this message before the copyright status was determined. To check if there is an online copy available:

• Check if the book is available in Google Books. You can search for terms in a specific volume by clicking on it, and using the "From inside the book" search box. The results are snippet views which provide a little context as well as page numbers.
• Search the HathiTrust Digital Library to see if a search-only version of the document is available. You can search for specific terms by clicking on a specific volume and using the "Search inside the text" feature. This gives you page numbers where the term is mentioned. Then you can then refer to the print volume for the full text. 
• See our guide on How to Find E-Books for more information.