- Series555 - John Baker Tongan Collection
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- Item85 - Tongilava,Sione L, Investigation of sea-floor for mineral deposits over the Tongan territorial waters has bright prospects, c1972
- Item86 - Local copra purchases - monthly and annual copra purchases (in pounds weight) from the stations at Tongatapu, Ma'Apai,Vava'u, 1968 - 1970
- Item87 - Kingdom of Tonga, Prospectus for the issue of 4 per cent local government bonds 1969/1974
- Item88 - Government of Tonga. Reports of the Minister of/for Finance for the years 1955 - 1974 (20 reports)
- Item89 - Government of Tonga. Report of the Lands and Survey Department for the years 1955 - 1961; 1963-1971; 1973 - 1974. Lacks reports for 1962 and 1972 (17 reports)
- Item90 - Government of Tonga, Statistics Department. Foreign Trade reports for 1976 and 1977, Nuku'alofa, Tonga. 1976 is a bound volume, Report for 1977 is in two stapled parts
- Item91 - Government of Tonga, Statistics Department. Quarterly Foreign Trade Report : FTR 1 (July - September) 1974 ; FTR 2 (October - December) 1974 ; FTR 3 (January - March) 1975, Nuku'alofa, Tonga
- Item92 - Statement of Trade and Navigation (Tonga) for the Years 1955 - 1972, lacks the report for 1958 (16 reports)
- Item93 - Government of Tonga, Department of Agriculture Reports: 1955 - 1956 ; 1958 ;1960 - 1974. Titles vary: Report of the Agriculture Department, Report of the Agricultural Department, Report of the Department of Agriculture and Report of the Minister of Agriculture
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