Thanks to Ben Clarke for additional information allowing me to identify repeated use of later booklets from 1989 Autumn to 1997 Summer. I will update above listings to reflect this over the next few days:

Janet Wheeler took over in autumn 1989, there were 9 terms produced over 3 years, then repeated in order for a further 5 years often but not always with new request or teachers' programmes added.

1 - autumn 1989, repeated autumn 1992 & autumn 1995
2 - spring 1990, repeated spring 1993 & spring 1996
3 - summer 1990, repeated summer 1993 & summer 1996
4 - autumn 1990, repeated autumn 1993 & autumn 1996, titled "Planet Earth"
5 - spring 1991, repeated spring 1994 & spring 1997, titled "Moving About"
6 - summer 1991, repeated summer 1994 & summer 1997, titled "Change"
7 - autumn 1991, repeated autumn 1994, titled "Seasonal Songs"
8 - spring 1992, repeated spring 1995, titled "Songs from Land and Sea"
9 - summer 1992, repeated summer 1995, titled "Europe"