Originally housed in a ringbinder this file is a counterpart of Acc.13328/1653. The original ringbinder was annotated as follows: "L-Z, Researchers, July 1988-closed May 1992", however there are letters outlying these dates, beginning in 1986 and finishing in 1991. Letters have been arranged alphabetically by researcher surname, subject surname, and/or organisation name. Original and copy letters are present.