These are the only ones we know about – if you have any that would fill in the blanks we would be glad to hear from you.
| 1970 | March | July | |||
| 1971 | January | April & June | September | November | |
| 1972 | April | August | December | ||
| 1973 | April | August | November | ||
| 1974 | January | September | December | ||
| 1975 | June | December | |||
| 1976 | March | May | August | November | |
| 1977 | February | May | September | December | |
| 1978 | February | May | September | November | |
| 1979 | February | May | August | November | |
| For some reason in 1971 there were 5 newsletters | |||||
Newsletters from other decades: 1960s, 1970s, 1980s, 1990s, 2000s, 2010s, 2020s