The Eagles opened for Joe Cocker. They are not mentioned in any ads or reviews for the show.
A photo of the group backstage was published in the May 13th, 1972 issue of RPM, a Canadian trade publication. The caption referred to the band as “Eagle,” which is not a misprint since they were also called Eagle at their next two shows in Spokane and Portland (also opening for Joe Cocker). A few months earlier, they were billed as Eagle at Tulagi in Boulder, Colorado.
L-R: Randy, Bernie Leadon, Glenn Frey, Don Boas (with Kinney Services, the international distributor for Warner Bros, later known as WEA), Asylum Records general manager, John Hartmann, and Don Henley.