As described on the web site, "eScholarship Publishing is an open access publishing platform subsidized by the University of California, managed by the California Digital Library, and offered free of charge to UC-affiliated departments, research units, publishing programs and individual scholars."

Their terms of use are quite simple. "Materials on eScholarship are free to read and download, by anyone, anywhere in the world, and anyone is welcome to link to them." Lots of stuff: 282,000 papers, 2,000 books, 47,000 theses. Under library, I found 'Mortuary practices in Late Antique Corinth! I expect almost all of the content will be in PDF format.

https://escholarship.org/