| RefNo | RHB/9/4/1/4/6 |
| Previous numbers | J.86 |
| Level | Item |
| Title | 5-1/4 inch computer disk, 'Back-up file LTRS\MISC', R H Brown |
| Date | 20th century |
| Description | No information regarding single or double-sidedness. No information regarding density.
Make: TANDY Universal Certified Diskette |
| Format | Digital |
| AccessStatus | Closed |
| AccessConditions | Items remain closed for 30 years from date of creation. |