Grand Funk, ‘We’re An American Band’ (‘Cashbox’ magazine, July 14, 1973). Click to enlarge.

Grand Funk’s “We’re An American Band” originally appeared on the album of the same name in July of 1973. The now-classic single rose all the way to #1 on the US Hot 100.

(Image source: Cashbox via American Radio History)

Previously on Vintage Ads: Buck Owens, ‘Hollywood Waltz’ (1976)