Before the establishment of CSAS:
Association of Czech Mathematicians and Physicists [Jednota českých matematiků a fyziků] (1862-1956) - mathematics and physics, 55 boxes, 2 card-files, 1862-1951, take-over list
After the establishment of CSAS:
Division:
CSAS Institute of Mathematics [Matematický ústav ČSAV] (1953-1992) - mathematics, 23 boxes, 2 packages, 2 books, 1946-1980, inventory (1946-1971), part unarranged.
Others:
Association of Czechoslovak Mathematicians and Physicists affiliated to CSAS [Jednota československých matematiků a fyziků při ČSAV] (1956-1992) - mathematics and physics, 32 boxes, 1 package, 1952-1982, arranged; CSAS Scientific Board of Mathematics [Vědecké kolegium matematiky ČSAV](1962-1992) - mathematics, 28 boxes, 1965-1992, take-over list
1 st CSAS Section - Mathematics and Physics [Sekce ČSAV I. - matematicko-fyzikální] (1952-1961) - mathematics, physics, 29 boxes, 1952-1961, inventory