About cataloging related items: I have always made a distinction between items that stand on their own as an artifact and items that do not because they are a part of a whole. For things that are artifacts on their own merit, such as utencils in a mess kit or an item in a box, I use numerals: Year.donor number.doll in box.clothing article (19220.127.116.11). Items that are part of a whole and do not make sense if exhibited on their own, such as a pot with a detachable lid or a coffee percolator with all its inner parts and cord, the number ends in a letter (1998.34.6.B for the lid). This is useful if you are counting the number of complete artifacts in a collection. This way you won’t inflate the number of whole artifacts by including all the many detachable pieces that come apart and have to be numbered as related.