The Library of Congress has such great resources for the genealogist. One such resource is their collection of Shaker documents. According to the finding aid for this collection, the manuscripts include:
"The Shaker Collection includes correspondence, diaries and journals,
recipes, photographs, financial and legal papers, community laws and rules, church records such as covenants, hymns and hymnals, orders and instructions, spiritual communications, prayers, inspirational writings and drawings, registers, lists of members, logbooks, lectures and speeches, and writings by and about members, including poetry, autobiographical,biographical, and historical sketches, essays, memoirs, testimonies, and notes and book drafts. Most of the collection concerns the period from 1792 to 1937, although some retrospective material relates to events as early as 1676."