Collected Newsletters First Series Nos. 1 to 7, Summer 1986 to Autumn 1991 Second Series Nos. 1 to 20, March 1995 to September 2004 Nos. 21 to 34, March 2005 to September 2011 Nos. 35 to 50, March 2012 to September 2019 Nos. 51 onwards, March 2020 to the present