Historical Note/Scope and Content
| Series 1 | Annual Conferences and Reports,1927-1967 |
| Series 2 | Governing Bodies,1928-1968 |
| Series 3.1 | Incoming Correspondence,1926-1967 |
| Series 3.2 | Outgoing Correspondence,1927-1967 |
| Series 4 | Committees, 1928-1967 |
| Series 5 | Subject Files, 1927-1967 |
| Series 6 | Publications, 1929-1968, n.d. |