Create a separate collection of additions if the original collection is permanently shelved in the Beinecke stacks and the volume of new papers is significant, or if a great deal of time has elapsed since the original collection was processed and the addition of material would create confusion. Treat the new material as a distinct collection and distinguish between the two by appending the word “Addition” to the title of the papers, as in Boswell Collection: Addition.
Discuss the relationship between the two collections in the first paragraph of the Description of the Papers in the new finding aid, and make appropriate linking references in the catalog record (MARC field 544). Also cite the other collection under Associated Materials in the Administrative Information section of the finding aid. If the Biographical or Historical note for the additions is essentially the same as that found in the earlier register, don’t repeat it; make a brief biographical statement and refer users to the fuller essay in the first finding aid.