The ORU Holy Spirit Center is digitizing a lot of Oral Roberts content and making it available online. We’ve added the following to the reference section for Oral Roberts. Thanks to Daniel Isgrigg the Director of the Center for providing the information and continuing the work to make as much digital information available for online searching.
They have also just published Volume 3 of Spiritus the ORU Journal of Theology.
https://digitalshowcase.oru.edu/oruc/ – The Oral Roberts University collection which contains a growing number artifacts related to ORU such as audio/video, City of Faith artifacts, publications, and chapel service archive.
https://digitalshowcase.oru.edu/or_collection/ – The Oral Roberts collection contains audio, unpublished writings, photos, messages and other artifacts from Oral Roberts and his ministry.
https://digitalshowcase.oru.edu/spiritus/vol3/iss2/ The ORU Theological Journal published an Oral Roberts Centennial edition with 12 new studies of the life and ministry of Oral Roberts that you can freely read or download online.