Authorities in the central province of Thua Thien Hue have approved a project to exchange materials with the US Library of Congress from this August.
Under the approval, nearly 300 royal documents including ordinances and entitlement statements will be the first to be sent to the world's largest library.
The project was initiated in 2008 by Ton Nu Lien Huong, Southeast Asian Section Team Coordinator, Library of Congress.
The documents, which were recently collected at provincial villages were dated to the Le, Tay Son and Nguyen dynasties between 1428 and 1945.
According to the Hue Monuments Conservation Center, they have so far categorized, digitalized and transcribed them from Chinese characters into Vietnamese.
Phan Thanh Hai, deputy director of the center, said they have found an entitlement system never mentioned in earlier historical records.
The work on these documents is also part of a project to establish a Hue Royal Library at Tang thu lau (Archives house), which was built in 1825 by the Nguyen Dynasty.