(VOVworld) - The wood blocks and official administrative papers Kings of the Nguyen Dynasty used to record history are on display for the first time at an exhibition in Hanoi.

The exhibition shows the organization of the historic preservation office, how the kings recruited staff to the office and the process of collecting documents to compile and print records. This is a rare chance for the public to see the once top-secret administrative documents carrying decisions and suggestions from the kings. Both the woodblocks and the official administrative papers have been recognized by UNESCO as the World Documentary Heritage in the Memory of the World Program.