| Approved without change | Reinstatement with change of a previously approved collection | 1991-02-25 | |
| Approved with change | No material or nonsubstantive change to a currently approved collection | 1989-04-25 | |
| Approved without change | Revision of a currently approved collection | 1987-07-17 | |
| Approved without change | Revision of a currently approved collection | 1984-06-28 | |
| Approved with change | No material or nonsubstantive change to a currently approved collection | 1981-07-17 | |
| Approved without change | Revision of a currently approved collection | 1980-06-10 | |
| Approved with change | No material or nonsubstantive change to a currently approved collection | 1977-05-24 | |
| Approved with change | No material or nonsubstantive change to a currently approved collection | 1976-12-29 | |
| Approved with change | No material or nonsubstantive change to a currently approved collection | 1976-08-30 | |
| Approved without change | Extension without change of a currently approved collection | 1975-06-25 |