| Identifier | Title | Date | Level of description | Other information | |
|---|---|---|---|---|---|
| EBA 2/699 | Korrespondenz: Bergbau-Aktiengesellschaften und Paul Niggli-Stiftung | 1948 – 1975 | File: 1 file | Standard period of protection | |
| EBA 9/39 | Korrespondenz 1991-1996: Schweiz und Ausland; Hochschulen und Universitäten | 1991 – 1996 | File: 1 file | Standard period of protection | |
| EBA 9/46 | Korrespondenz 1981-1990: Ausland; langjährige Benutzer | 1981 – 1990 | File: 1 file | Standard period of protection | |
| GFA 9/3.127.15 | Standortinformationen, Beilage zu GF intern, Heft Nr. 15, Dezember 1980 | 1980 | File: 1 file | digitized | prolonged period of protection |