b. If the title is about a subject or topic that there may not be much on (Masons, chupacabras, local history or interest, etc.), you should consider replacing if available. If you chose not to replace that exact title, consider whether the collection would benefit from similar or same topic titles. In that case however, it is not a replacement but a “gap” and should be requested using the 72 fund code, and must go through the normal 72 request procedure. That is, Head Acquisitions Librarian must approve and the request should be given to Collection Development once it is approved.
c. Primary, unique or original sources. These sources can and do serve a variety of research needs (written by a participant from a current or historical perspective, or by an observer during the time of the event or from a perspective indicative of a particular or unique place and time), we should consider having them in the collection, especially since we did, for some reason have them in the collection to begin with. Even in this case however, a reprinted edition may be the only edition available for a reasonable price.
d. In the case of material purchase after 2002, the title record should have a 691 line. This is the provenance, i.e. what department ordered, when and whether it was originally purchased by faculty or a colleague. With this information you may want to consider contacting the department or the colleague to see why the title was originally ordered.