Newsletters
The Group first published a ‘bulletin’ in 1970, of which six issues were produced, the last dated 1979, though published in 1983. Since 1993 a ‘newsletter’ has been published nearly annually.
| Bulletins | Newsletters | |
| 1970 | 1984 | 1997 |
| 1971 | 1993 | 2004 |
| 1972 | 1994 (1) | 2005 |
| 1977 | 1994 (2) | 2006 |
| 1978 | 1995 | 2007 |
| 1979 | 1996 | 2008 |
| 1996-7 | 2009 | |