How can I find a copy of my Dad's Seminary Master's/Doctor's Theses at Princeton/Temple Universities in 1942/1944. His name: Olaf K. Storaasli
Google Scholar indicates there is a Storaasli, Olaf Kenneth. The Idea of" Soteria" in the Synoptic Gospels. Diss. Princeton Theological Seminary, 1942. And here's the record in the catalog of Wright Library at Princeton Theological Seminary. The location given for their copy is "Second Floor - Special Collections" and the status is "Use in Library". If you are unable to visit the library, you can try contacting the librarians and ask if it would be possible to acquire a scanned version.
I do not find a mention of the dissertation at Temple University on their library website. However, using the ProQuest dissertation database I find a record (ProQuest ID 301831003) of the dissertation (but not the full text) listed under the title "THE GOSPEL AS EXPRESSED IN THE CHORALE" and the year 1945. Like Jon Custer suggests in a comment, contacting librarians at Temple seems like the best lead.