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Michael Lear

  by Michael Lear, Rare Collections Librarian, State Library of Pennsylvania mlear@pa.gov Preservation of Paper-Based Materials Overview Paper-based materials are subject to damage by multiple external and internal factors. Careless handling can result in tears. Staining...

Michael Lear

      by Michael Lear, Rare Collections Librarian State Library of Pennsylvania Identification of photographs Identifying the type of photograph(s) that you have helps to date an image and can be key to determining the best handling and storage conditions. Some...