The first mandate, On the name of the country, people and nationality, issued 24 June 1939, cited 'public preference' for changing the name of the country. It consisted of two items:
"In Thai: The country, people and nationality are to be called 'Thai'."
"In English:
"The country is to be called 'Thailand';
"The people and nationality are to be called 'Thai'."[1]
One result of this mandate was that organizations with 'Siam' in the name were forced to change their names. Well-known examples include the Siam Society, which became the Thailand Research Society, Siam Commercial Bank, renamed to Thai Commercial Bank, and Siam Cement, which became Thai Cement. After Pibulsonggram was deposed the first time in 1944, Siam Society reverted both its Thai and English names, while the latter two reverted only the English version of their names.