Notes
ads: San Francisco Sunday Examiner and Chronicle Datebook, April 1, 1973, p. 12; San Francisco Sunday Examiner and Chronicle Datebook, April 8, 1973, p. 11; San Francisco Sunday Examiner and Chronicle Datebook, April 15, 1973, p. 11
listings: Hayward Daily Review, April 13, 1973, p. 53; San Francisco Sunday Examiner and Chronicle Datebook, April 15, 1973, p. 4