Swiss National Library
Hallwylstr. 15
3003 Bern

General contact: info@nb.admin.ch (subject: HelveticArchives)
Phone +41 58 462 89 35

Swiss Literary Archives (SLA): arch.lit@nb.admin.ch
Phone +41 58 462 92 58

Prints and Drawing Collections / Federal Archives of Historical Monuments: Graphische-Sammlung@nb.admin.ch
Phone +41 58 462 89 71

Centre Dürrenmatt Neuchâtel: cdn@nb.admin.ch
Phone +41 58 466 70 60