| 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 9/9 | Korrespondenz 1994-1998: Schweiz | 1994 – 1999 | File: 1 file | Standard period of protection | |
| GFA 9/3.69 | GF intern, Nr. 69, Dezember 1995 | 1995 | File: 1 file | digitized | prolonged period of protection | |
| GFA 9/3.69.1 | GF intern, Nr. 69, Dezember 1995 | 1995 | File: 1 file digital born | digitized | public |