Cataloging Bookmarks - a Schema

Recently on our members' Facebook page, we have been discussing how to manage bookmarks in a database.  In addition to what software to use, there is the question of how to describe the bookmarks, i.e., cataloging them.  I developed a basic system twenty years ago when I began using software for my collection.  I present it here as a starting point.  There is no right or wrong way to do it, although there are probably 5-7 elements that most of us could agree upon.  As this discussion progresses, we may create a new page on the IFOB web site for information on managing a collection. 

• Creator/Author:  This could be the person or organization that created the bookmark, or the author of the book that the bookmark advertises.
• Title: Writing on the bookmark that seems to be the main emphasis, or the title of a book being advertised.
• Publisher: Company that produces the bookmark or could be the sponsoring organization that publishes it.  
• Place of Publication: The city, state, country, if known. If any of these elements are inferred, enclose in brackets.
• Date Published:  Often the date is unknown but can be estimated. 
• Date Acquired:  This date is of interest to the collector and can be specific to day/month/year or at least the year.
• Source Acquired: Another element of interest to the collector and can be as specific as desired. 
• Price:  This can record a price or whether it is free or a gift. 
• Series: An optional element that is sometimes of interest to record a series name and number or other designation. 
• Description: Even if an image is available, it can be useful to add a description for searching.  Elements such as illustrations, type of page flap, shape, etc. are of interest.
• Size: This information can be recorded in description, but if made a separate element, it can be used to analyze the characteristics of the collection. 
• Notes: Other information not related to the physical description can go in the notes including any interesting text, information about the producer, or even notes about the collector's use of the bookmark in displays, articles, etc.
• Category:  If the collector assigns subject terms, keywords, or other category notes, they should be in a separate field. They may include the type of material or other physical characteristics in addition to the subject matter.
• Accession number/ID:  It is often useful to have a unique number that can be sequential or use any other scheme to identify the item. 

Along with the field definitions, I have also created a set of "cataloging rules" that help me apply the elements in a consistent way.  These rules may not be useful for others, however, since the purpose and design of a collector's database will vary.

Any comments on this scheme, which elements are most important, other elements to consider, etc. are most welcome!