King Tupou VI and Queen Nanasipau'u were presented with a range of Tongan archival material held by the library.
The library holds film footage of Queen Elizabeth II's tour of Tonga in 1954, and various Tonga government records.
Archives New Zealand has hosted Tongan government ministers and officials on matters of record keeping for good governance and best practice for storing physical archival materials.
While at the library in Wellington, the royal couple also viewed He Tohu, the permanent exhibition of New Zealand constitutional documents.
