Many books have material added that is not inherent to the original publication. The two most prevalent categories are manuscript annotations and inserted ephemera. Houghton has developed a variety of routine local strategies for addressing such classes of material.
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Printed items often contain manuscript markings. Routinely, these are noted in the 561 or 562 of the holdings record and, if applicable, the name of the former owner or annotator is traced in the bibliographic record in an added entry, with the appropriate relationship designator(s). (See RDA Appendix I, the RBMS list of relationship designators, and MARC Code List for Relators for vocabulary and usage.) However, on occasion, an item will often be found to contain significant manuscript additions or insertions. Treat these as noted below.
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Objects such as feathers, dried flowers or leaves found in books should be housed appropriately , either in acid-free envelope or mylar sleeves/sleeve. Mylar sleeves may be appropriate in most cases for sturdy objects; however, depending on the object's degraded stage (e.g., dried flowers, petals, etc.), it is always best to consult the conservation staff to examine the physical item and its fragility . (some may require tweezers to transfer items).
Retaining loose material (manuscript and printed) with books:
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