He constructed his profession in Amsterdam, then had lengthy associations with British opera firms and the Boston and Chicago symphonies.
https://www.washingtonpost.com/native/obituaries/bernard-haitink-dead/2021/10/23/a819dcf6-334e-11ec-9241-aad8e48f01ff_story.html?utm_source=rss&utm_medium=referral&utm_campaign=wp_world | Bernard Haitink, famend Dutch orchestral conductor, dies at 92