Dipavamsa
Dipavamsa (Chronicle of Island) is the oldest historical record of Sri Lanka It is believed to have been compiled around 3rd or 4th century BC somewhere in Anuradhapura in Sri Lanka during the reign of King Dhatusena of Sri Lanka, the first Mauryan King of Sri Lanka

Dipavamsa is one of the most important works in Pali Literature It details the tooth relic and Bodhi Tree’s arrival in Sri Lanka It also deals with the arrival of Buddha’s teaching and preachers in Sri Lanka It mentions that Buddha visited Kelaniya and Dighavapi in Sri Lanka
Mahavamsa
Mahavamsa {Great Chronicle} is a Pali epic poem and deals with royal dynasties of not only Sri Lanka but the whole Indian subcontinent andis known as world’s longest unbroken historical accounts The consecration of Asoka and details of Selucus and Alexander have been detailed in it
Mahavastu
Mahavastu {Great Event} is a work in prose and verse and is written in Sanskrit, Pali and Prakrit It details the miracles & earlier lives of Buddha