This month marks the 20th anniversary of the Best of Studs Terkel, WFMT’s weekly showcase featuring the wide-ranging programs and interviews that Studs Terkel presented on this station, from 1952 to 1997. Here is one of the very first “Best of” episodes. It’s from the time, in October 1974, when Studs spoke with the great Canadian heldentenor Jon Vickers (1926 – 2015).