DYMM Seri Paduka Baginda Sultan Yahya Petra merasmikan Bangunan Persatuan alumni Kolej Melayu Kuala Kangsar dikenali sebagai Malay College Old Boys' Association (MCOBA) atau "Persatuan Murid Tua Kolej Melayu Kuala Kangsar", di Kuala Lumpur.

His Majesty Sultan Yahya Petra officiated the Kuala Kangsar College of Alumni Association building known as the Malay College Old Boys' Association (MCOBA) or the "Kuala Kangsar Malay College Pupil Association" in Kuala Lumpur.