IRENE, which stands for Image Reconstruct Erase Noise Etc., is a method for extracting sound from mechanical audio recordings, such as phonograph records and cylinder records. What makes IRENE special is that the entire process is contactless, allowing us to extract audio from broken, fragile, and otherwise unplayable objects while reducing the possibility of damage.
The following is a post by Anna Katherine Overstreet and Alexandra Ptacek, 2022 Junior Fellows, Preservation Directorate. Anna Katherine recently graduated with her undergraduate degree in mathematics from Mississippi State University, and she will be returning in the fall for a graduate degree in statistics. Alexandra is a graduate student of Anthropology and Museum Studies …
For over a decade, scientists at the Library have been using sealed, low-oxygen anoxic display encasements for the concurrent exhibition and preservation of iconic objects. The Library currently maintains two of these exhibition encasements for displaying iconic maps by Abel Buell and Martin Waldseemüller.
Every year the Preservation Directorate of the Library of Congress participates in American Library Association’s Preservation Week. This annual celebration highlights preservation efforts in libraries, archives, museums, historical societies and collecting institutions in communities all across the country. Fenella France, Chief of the Library’s Preservation Research and Testing Division (PRTD), started out Preservation Week with a heritage scientific introduction to the world of fragments.
Staff at the Library of Congress love to showcase the collections with the public. As exhibitions are being planned , the Conservation Division (CD) and Preservation Research and Testing Division (PRTD) have been collaborating to assess the items selected for display. As part of this process, staff in CD typically review every item in an exhibition to determine how to safely display it. This review includes evaluating possible treatments, the kinds of mounts or cradles for display, and various ways that lighting might affect the item.
This is a guest post written by Meghan Wilson, a Preservation Science Specialist in the Preservation Researching and Testing Division. Meghan runs PRTD’s multispectral imaging system, often unveiling the invisible within the Library’s collection. Amidst the Revolution, Alexander Hamilton sought solace in his love for Elizabeth Schuyler. Their correspondence is filled with moments of fondness, …
This is a guest post by Cindy Connelly Ryan, a Preservation Science Specialist in the Preservation Research and Testing Division (PRTD). Her research areas include the light sensitivity of inks, dyes and organic colorants, deterioration and stabilization of verdigris and iron gall ink, technical study of collection items, and re-creating obsolete historic recipes for artists’ …
