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 | 2004 | 2012-13 |
| 1971 | 1993 | 2005 | 2013-14 |
| 1972 | 1994 (1) | 2006 | 2014-15 |
| 1977 | 1994 (2) | 2007 | 2015-16 |
| 1978 | 1995 | 2008 | 2016-17 |
| 1979 | 1996 | 2009 | 2017-18 |
| 1996-7 | 2010-11 | 2018-19 | |
| 1997 | 2011-12 | 2019-20 | |