The majoritiy of this collection involves the sermon notes and other religious writings by Rendahl.

The 2022 acquisition series maintains the materials donated to Converge North Central by Dale Rendahl. The brown scrapbook was gifted to Rendahl by the Iowa Baptist Conference churches in appreciation for his service, and contains mostly correspondences from his church work in 1971. The green binder acting as a scrapbook contains periodical articles, many written by Randahl, as well as some newsletters and memoir writings. The correspondence folder primarily consists of notes from Iowa based churches from 1971. The photographs are of Pine Lake Camp in Eldora, Iowa.

Some other materials were added to this collection from Rendahl's biographical file. The Bible belonged to Rendahl and contains annotations. As 2010 Bethel Alumnus of the Year, there are two DVDs and a Tribute Picture Book from this event.