1. The original bibliography of 1934 was much shorter. The items listed in it are indicated with #.
2. Protokoll.
3. Föreläsningsanteckningar [Lecture notes.].;Nehrman, David.
4. Correspondence.;Olivecrona, Karl.
5. Typescript notes from conversations with Hägerström and from his seminars in the 1920s and early 1930s;Olivecrona, Karl.