If you are not a current student or employee of PSU this capability is available on site at a Penn State library, or you can create a Friend account with the University of Michigan.  Details follow:

You can also sign up for a University of Michigan "Friend Account" in order to login and save personal collections of materials in HathiTrust. More information on Friend accounts can be found here: https://its.umich.edu/accounts-access/computing-accounts/friend-accounts​.