Alumni, if they are not enrolled in classes, are considered community members and have access to resources only if you come to Alden Library (that is no access from home or off-campus). You may want to look at the additional benefits of joining the Friends of the Libraries (e.g., access to OhioLINK and interlibrary loan).
Retired employees of Ohio University have access to resources at Alden Library (but no access from home or off-campus) as well as OhioLINK and interlibrary loan. Emeritus faculty have all the privileges of a retired employee and off campus access to electronic databases and journals.
Please see Who is Eligible? for additional information.