In Geoffrey Jackson's autobiography published in in the Watchtower, he states that him and his wife went to serve as missionaries on the island nation of Tulavu in 1979, and there were only 3 baptized Witnesses in all of Tulavu, AND he translated all of the Witness literature into the Tuvaluan language in 1980, printing it right there on the island. The article says they served as missionaries there until 1985 when they were assigned to the Samoa Branch.
In July, 2008, the Watchtower Society penned a letter to the UN Human Rights Council about the treatment of JWs in Tuvalu. In it they summarized the history of the Witnesses in the island nation, claiming that Geoffrey Jackson was not assigned as a missionary there until 1984:
This is quite a discrepancy. Can anyone make sense of it?