Arranged in five subseries: 1. Administration, 1949-2008, undated; 2. Study Groups, 1953-1995, undated; 3. Regions and Chapters, 1949-2005, undated; 4. Personal Papers of Members, 1948-1998, undated; 5. Addendum [New administrative materials], 1973-1993.
Series one and five are arranged by sub-series, series two and three are arranged by sub-series then chronologically, series four is arranged by main heading then chronologically.
For more information about each series, please consult the series descriptions in the box and folder listing.
16 manuscript boxes, 3 record center boxes, 2 irregular boxes, 1 folio, 1 volume