If hand-written, use a permanent black ink. It may be difficult to make copies of manual catalogue records, particularly as they may be regularly updated. Try to keep a copy of any catalogue information which is not held in entry or accession records, and could not be reconstructed in any other way. If a catalogue is computerised, then backups can be made more easily and frequently. Copy any new additions or changes at the end of the day and re-copy the whole file at the end of the week.
Current exit records Details of material currently out on loan are particularly important.
Treat exit records in the same way as entry records.