The Kebra Nagast is an Ethiopian document recording the conversion of Ethiopian leaders to worshiping the Lord God of Israel as well as tracing the lineage of 20th century Ethiopian emperors (including Haile Selassie, whom the Rastas view as the Messiah) back to the Queen of Sheba and King Solomon.
Author: Fitz Balintine Pettersburg
The Royal Parchment Scroll of Black Supremacy espouses a strongly Afrocentric view and supports struggle against the oppressive white culture of 1920s Jamaica. It is widely considered a founding document of the Rastafari movement.
Author: Leonard Percival Howell (as G. G. Maragh)
The Promised Key was written in the 1930s while the author was in prison for sedition against the white authority in Jamaica. The document is clearly an edited version of the Royal Parchment Scroll, although it also expresses some additional claims, such as explicitly naming Emperor Haile Selassie as the promised Messiah.