Ties 1975 - 1976 Permanent Demonstration #1, 19.1.1976 1976 Thread performance Permanent Demonstration #2, 19.1.1976 1976 Thread performance Permanent Demonstration #3, 19.1.1976 1976 Thread performance Permanent Demonstration #4, 19.1.1976 1976 Thread performance Permanent Demonstration #5, 19.1.1976 1976 Thread performance Permanent Demonstration #6, 19.1.1976 1976 Thread performance