Consists of a collection of manuscripts of Southcott and material related to her. Included are 12 notebooks and 63 pamphlets or loose writings containing copies (1793-1814) in various hands of Southcott's divine communications, letters, poems, and prayers. Many of the notebooks or pamphlets are conglomerations of manuscript material gathered at random and bound or sewn together. One such manuscript is Divine and Spiritual Letters of Prophecies..., published by E. Spragg (1802?).

Also present are a few later writings and prophecies by others, copies of letters relating to Lavinia Jones's attempt to acquire Southcott's sealed writings after her death, and a manuscript list of Southcott's 65 published works and an index to them as prepared by Daniel Jones for his Catalog of Books Published by Joanna Southcott (1852). In addition, there is a pledge of commitment (1837) to "Satan's Destruction, and Christ's Kingdom to Come on Earth" signed by over sixty believers, as well as an embroidered sampler reading "Joanna Southcott 1807." Later accessions include letters (1820, 1828) by Thomas Philip, rector of Old Swinford, to Charles Taylor of Exeter about Southcott and her "believers," as well as a small archive (1803-1860), including 2 "proclamations of faith" (dated 1803) bearing Southcott's seal.