title: Photoshop®Assisted Spectroscopy: An Economical and Non-Destructive Method for Tracking Color Shift.
abstract: Many historically and culturally significant objects from the mid-to-late 20thcentury were created with media which contains light sensitive dyes that present problems for collection custodians and conservators. The conservation staff at the National Library of Medicine (NLM), National Institutes of Health, conducted a multi-phase project on the aging of ballpoint pen ink in a variety of enclosure types that ultimately culminated in the development of a new method to detect color shift in documents with light sensitive media. This article offers instructions on how to detect color shift in digitized materials using Photoshop® Assisted Spectroscopy.
authors.affiliation: contract conservator for the Conservation Program of the History of Medicine Division at the National Library of Medicine and principal of Wright Conservation & Framing.
authors.forename: Kristi
authors.initials: K
authors.lastname: Wright
authors.affiliation: Conservation Librarian for the History of Medicine Division at the National Library of Medicine.
authors.forename: Holly
authors.initials: H
authors.lastname: Herro