Learn how to request document delivery service at the OSU Library. Quickly access the ILLiad online system at the Library by visiting illiad-s.library.okstate.edu/illiad/logon.html Have questions? Chat with us online at library.okstate.edu/chat or email libraryhelp@okstate.edu Find the OSU Libraries online at library.okstate.edu Connect on Instagram, Facebook and Twitter @okstatelibrary.