tape labelling

Hi,

I have been using tapes to backup my data for a while now. However the daily, weekly, monthly tapes are taken often to an offsite location and placed on shleves. The first shelf contains the daily and the weekly tapes and the second shelf contains the monthly tapes and the top top contains the yearly tapes. . I know for myself the tapes i keep from the left to the right are from the newest week to the oldest. But if someone comes and messes up the order its going to be a huge hassel. Is there a better way to keep it organized and labelled while its in the offsite location so that i can keep track of them in a better way or a better labelling scheme? the tapes all have individual bar codes.

Thanks.