National Archives of Thailand Glass Plate Negatives (Virtual Archives)

Overview

The Glass Plate Negatives Virtual Archives is an online resource of the National Archives of Thailand (NAT), providing digital access to the Royal Photographic Glass Plate Negatives and Original Prints Collection—a UNESCO Memory of the World–registered collection comprising 35,427 glass plate negatives and approximately 50,000 original prints covering the period from 1855 to 1935.

History and the Collection

The National Archives of Thailand (NAT) was established on 18 August 1952, under a Royal Decree that formally designated it as a division of the Fine Arts Department of the Ministry of Culture, building on a national library section dating to 1916 (B.E. 2459). The glass plate negative collection itself has origins in the late 19th century: Prince Damrong Rajanubhab gathered photographic materials from the personal collections of King Chulalongkorn (Rama V), King Vajiravudh (Rama VI), and his own collection at the Vajirayana Royal Library. In 1977, the entire collection was transferred to the care of the National Archives of Thailand in Bangkok. The collection was inscribed on the UNESCO Memory of the World International Register in 2017 in recognition of its global documentary significance. To date, all plates have been scanned and catalogued to support digital access and preservation.

Collections and Holdings

The collection comprises glass plate negatives ranging from 4 to 12 inches (100–300 mm) in size, preserved in their original teak boxes at a constant temperature of 18°C and 40% relative humidity. Subject matter includes portraits of Thai kings and members of the royal court, royal ceremonies, diplomatic events (including King Chulalongkorn's 1897 European tour), religious and cultural ceremonies, military processions, scenes of Bangkok and its waterways, and everyday life in Siam during its period of modernization. The NAT has published two books of captioned photographs from the collection and organized both physical and virtual exhibitions.

Significance for Visual and Media History

The collection constitutes a primary visual record of Thailand's transition from absolute monarchy to constitutional democracy (the constitutional period beginning with the coup of 1932 and Rama VII's constitution), and of Siam's engagement with colonial-era geopolitics. It offers unique resources for visual journalism historians and researchers studying Southeast Asian press and photographic history in the late 19th and early 20th centuries.

Access and Usage

The Virtual Archives platform is accessible online, allowing researchers worldwide to browse digitized images from the glass plate negative collection. Physical access to original materials requires visiting NAT facilities in Bangkok, Phayao, or Ubon Ratchathani.