ABSTRACT
Long-term intellectual preservation treats the difference between the kinds of information librarians and archivists are used to working with and the new kinds of information sources that we are working with now. Broadly speaking, it is the difference between artifactual information and electronic information. Artifactual information is that kind of information which is associated with a material object (books, for example, or engravings): it has weight and occupies space, so to speak, as we create it and use it. If we have preserved an artifactual object, we have done the job of preserving the ill-formation associated with it. With electronic information, this relation is no longer so true.
