His tenure of 19 years with the Minneapolis Symphony was not equalled until Stanisław Skrowaczewski (1960–79).
The conductors with whom he has collaborated include Bernard Haitink, Herbert Blomstedt, Edo de Waart, Rafael Frühbeck de Burgos, Charles Dutoit, Lukas Foss, Eugen Jochum, Raymond Leppard, Robert Shaw, Stanisław Skrowaczewski, and David Zinman.
Jennings prepared the choir to record Ravel's Daphnis and Chloe with the Minnesota Orchestra under the direction of Stanisław Skrowaczewski, and during his tenure, he arranged for several notable conductors to rehearse and lead the St. Olaf Choir in concert, including Polish composer Krzysztof Penderecki, Bach specialist Helmuth Rilling, British organist Simon Preston, and Robert Shaw.
Stanisław Skrowaczewski, the orchestra's eighth principal conductor from 2007 to 2010, now has the title of honorary conductor laureate.
Stanisław August Poniatowski | Stanisław Lem | Stanisław Ignacy Witkiewicz | Stanisław Jerzy Lec | Stanisław Skrowaczewski | Stanisław Wyspiański | Stanisław Poniatowski | Stanisław Moniuszko | Stanisław Bułak-Bałachowicz | Stanisław Staszic | Stanisław Potocki | Stanisław Ossowski | Stanisław Szczęsny Potocki | Stanisław Mikołajczyk | Stanisław Maczek | Stanisław Leszczyński | Stanisław Kulczyński | Stanisław Kostka | Stanisław Grzmot-Skotnicki | Stanisław Baran | Jan Stanisław Bystroń | Stanisław Witkiewicz | Stanisław Tymiński | Stanisław Tatar | Stanisław Przybyszewski | Stanisław Lubomirski (1704–1793) | Stanisław Lubomirski | Stanisław Grabski | Stanisław Chlebowski | Andrzej Stanisław Załuski |
Since its creation, the Institute has included some 1,500 scholars and artists, including Zbigniew Brzeziński, Jan Henryk De Rosen, Stanisław Skrowaczewski, Aleksander Wolszczan, Hilary Koprowski, Waclaw Szybalski, Michael Novak, Bohdan Pawłowicz and Nobel Prize winners Roald Hoffmann, Czesław Miłosz and Frank Wilczek.