See Siam through the Royal State Railway Film Collection (1926-1932)

In 1922, General Prince Kamphaengphet Akarayothin, a pioneering figure in Thai cinema and the head of the Royal State Railway Department, established the Topical Film Service. This groundbreaking unit produced films to showcase government initiatives, royal events, and Thailand's tourism potential. It was one of the world's earliest state-run film departments, operating for a decade until the 1932 revolution gradually phased out its role.