Istana - Office of the President of Singapore: Includes information about the President S R Nathan, former presidents, the Istana grounds, ceremonies and protocols and news about the office of the president.
Ong Teng Cheong - Wikipedia: Biography of Mr Ong Teng Cheong, ex-president of the Republic Singapore.
President of Singapore: The office of the President of Singapore and his predecessors.
Sellapan Ramanathan - Wikipedia: Biography of Mr S. R. Nathan, the current President of the Republic of Singapore President
Wee Kim Wee - Wikipedia: Biography of Mr Wee Kim Wee, ex-president of the Republic of Singapore.