| RefNo | RHB/9/4/1/4/3 | 
| Previous numbers | J.83 | 
| Level | Item | 
| Title | 5-1/4 inch computer disk, 'Back-up - LTRS/MISC2', R H Brown | 
| Date | 1997-1998 | 
| Description | No information regarding single or double-sidedness or density. Make: odp MS-DOS/PC-DOS. | 
| Format | Digital | 
| AccessStatus | Closed | 
| AccessConditions | Items remain closed for 30 years from date of creation.  | 
| RelatedMaterial | See J.94, J.95. |