Clays, gemstones, corrosion products, poisons, plants, and more – green pigments used in books and manuscripts over the centuries have some surprising origins!
How do we preserve open reel audio tapes? How quickly are they breaking down? Recently published work from a collaborative study between scientists at the Library and colleagues at FUJIFILM shows that many of these historic tapes are likely sticking around for a while.
Each book in the Library of Congress has its own story from writing to publication to its placement on the Library's shelves. Some take a little longer and need special treatment because they don't travel alone.
This is a guest post written by Peter Alyea. Peter is a Preservation Science Specialist in the Research and Testing Division of the Library of Congress and has been working with Lawrence Berkeley National Laboratory on imaging recorded sound collections for preservation and access since the inception of the IRENE project. Although making audio recordings …
This is a guest post by Lynn Brostoff, a chemist in the Preservation Research and Testing Division. Her research interests include the characterization of iron gall ink, verdigris pigment, and glass deterioration. Carol Lynn Ward-Bamford (left), Curator, and Lynn Brostoff (right), Chemist, examining a Laurent flute in the Music Division’s Flute Vault. Photo Credit: Larry …