| Section | Date | Issue | Size | Title |
| 668-000-000 | 1972-06-01 | 33 | 176.51 KB | Numerical Index - Division 668 - Data Test Centers |
| 668-000-000 | 1972-06-01 | 90 | 292.56 KB | Numerical Index - Division 668 - Data Test Centers |
| 668-108-510 | 1967-06-01 | 2 | 434.98 KB | Data Test Center - 904A- and 904C-Types - Test Procedure - Data Auxiliary Set 806A-Type |
| 668-110-500 | 1972-05-01 | 1 | 173.90 KB | Data Test Center - 904A- and 904C-Types - Test Procedure for Data Access Arrangements |