She joined the Green Island institute in 1950 before becoming a foundation member of the Concord group.
Branch president Valerie Knowles said the group met in Mrs Thomson's home until numbers grew too large.
She was "great in entertainment" and spent some time as the secretary.
Despite being 93 and living in a rest-home, she still attended every meeting.
"I think she just loves it all, and still loves it all," Mrs Knowles said.
Mrs Thompson received a 60-year service badge at the group's annual meeting yesterday.
Others to receive awards were. -50 years' service, Peggy King, Dorothy Clark and Carol Garry; 40 years' service, Jennie McIntosh and Joan Kennedy; good service, Dorothy Burnard, Maureen Finch and Myrtle McDonald.
The meeting also marked the end of Dorothy Clark's presidency, with Dawn Morrison taking over the reins.
