Eureka .... I've struck it rich .... found myself viewing this series
https://en.wikipedia.org/wiki/American_Folk_Blues_Festival

The American Folk Blues Festival was a music festival that toured Europe as an annual event for several years beginning in 1962. It introduced audiences in Europe, including the UK, to leading blues performers of the day such as Muddy Waters, Howlin' Wolf, John Lee Hooker and Sonny Boy Williamson, most of whom had never previously performed outside the US. The tours attracted substantial media coverage, including TV shows, and contributed to the growth of the audience for blues music in Europe.

The showcase of Blues musicians is like a roster of the Gods - Blues musicians who performed on the American Folk Blues Festival tours included Muddy Waters, Sonny Boy Williamson, John Lee Hooker, Sippie Wallace, T-Bone Walker, Sonny Terry & Brownie McGhee, Memphis Slim, Otis Rush, Lonnie Johnson, Eddie Boyd, Big Walter Horton, Junior Wells, Big Joe Williams, Mississippi Fred McDowell, Willie Dixon, Otis Spann, Big Mama Thornton, Bukka White, Jimmy Reed, Howlin' Wolf (with a band made up of Sunnyland Slim, Hubert Sumlin, Willie Dixon and drummer Clifton James), Champion Jack Dupree, Son House, Armand "Jump" Jackson, Skip James, Sleepy John Estes, Little Brother Montgomery, Victoria Spivey, J. B. Lenoir, Little Walter, Carey Bell, Louisiana Red, Lightnin' Hopkins, Joe Turner, Buddy Guy, Magic Sam, Lee Jackson, Matt "Guitar" Murphy, Roosevelt Sykes, Doctor Ross, Koko Taylor, Hound Dog Taylor, Archie Edwards,[8] Helen Humes and Sugar Pie DeSanto.

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