The California Digital Library (CDL) has a well-cited example of what is called a Digital Assets Submission Inventory. This sample inventory document is a resource that can serve as a template for institutions seeking a simple means to build out an inventory. Among other things it seeks to guide the institution toward identifying file types, file sizes, number of objects, types of metadata, and types of storage media related to a collection or set of collections.
The document is available at: www.cdlib.org/services/dsc/contribute/docs/submission.inventory.rtf.
Institutions seeking to inventory their digital newspapers can adapt these simple tables to more accurately record information in-line with the suggestions recommended above.