For about twenty years after Carleman's death, the Institute was inactive and existed only as a growing library used by a handful of mathematicians in the Stockholm area and supervised by a member of the board, first F Carlson and then O Frostman (see and [), p. 1053).
Para sa mga tungkol sa dalawampung taon matapos Carleman ng kamatayan, ang Institute ay di-aktibo at nabuhay lamang bilang isang lumalagong library na ginagamit ng isang dakot ng mathematicians sa Stockholm lugar at supervised ng isang miyembro ng lupon, unang F Carlson at pagkatapos ay O Frostman (makita at [), P. 1053).