Previn conducts Walton’s Second Symphony, http://www.colinscolumn.com/andre-previn-conducts-the-lso-in-william-waltons-second-symphony-during-the-1974-bbc-proms-season-august-9-royal-albert-hall-audio/, 1974 Proms.
Previn conducts William Schuman’s Third Symphony, http://www.colinscolumn.com/william-schumans-symphony-no-3-andre-previn-conducts-the-lso-may-1998-barbican-hall-previns-reading-is-a-nice-complement-to-leonard-slatkins-dso-account-already-on-the-column/, LSO 1998.
Rest of Prom, Haydn & Berlioz:
https://www.bbc.co.uk/events/e4v4fx