Nordlysobservatoriet (Universitetet i Tromso̜).
Universitetet i Tromso̜ Nordlysobservatoriet correspondence, 1928-[ongoing].
Includes incoming correspondence, 1928-[ongoing]; outgoing correspondence, 1930-1932; 1934-[ongoing]. Subjects: astrophysics and geophysics.
Astronomical observatories -- Norway.
Astrophysics
Geophysics
AIP-ICOS
In private hands.