They were on the tv series "In Concert" and the guests that appeared with them were The Four Tops, and the group Isis. Also between breaks, was juggler Bobby Sandler.
August 9. 1974 fell on a Friday.
September 13, 1974 fell on a Friday.
February 8, 1974 fell on a Friday.
The given date was a Friday.
Friday the 4th of January 1974.
June 14, 1974 was a Friday.
May 17 1974 was a Friday.
20th September 1974 was a Friday.
March 15 1974 was a Friday.
February 22 1974 was a Friday.
March 1st 1974 was a Friday.
August 16 1974 was a Friday.