The Pentecostal Collection was established to preserve primary source material arising from the Pentecostal movement. This collection consists of works that reflect the history of the Pentecostal movement that arose in the early 20th century in America to which the Assemblies of God traces its foundations and of the charismatic movement of the 1960s and 1970s. It incorporates primary works by leaders or other significant people involved in the movement with focus given to regionally local leaders. Topics connected with or arising within the movement, such as holiness, eschatology, dispensationalism, missiology (late 1800s-1935), Trinitarian controversies, the Latter Rain movement, and Oneness Pentecostals movement, will also be included.