Kenneth David Kaunda ( born 28 April 1924 ) , also known as KK , served as the first President of Zambia , from 1964 to 1991 .
Kenneth David Kaunda ( born 28 April 1924 ) , also known as KK , is a Zambian politician and teacher . He first served as the first President of Zambia from 1964 to 1991 .