Top of page

Category: Tools of the Trade

Two people carefully adjust the position of a shallow box holding a portrait of George Washington under the lens of a microscope.

Exceptional! Identifying Artist Materials in an Early Portrait of George Washington

Posted by: Megan Zins

In celebration of Washington’s birthday this year, learn about a special portrait of the nation’s first president. Scientists in the Library’s Preservation Research and Testing Division, working with a visiting researcher, recently discovered the use of a unique artist material in the drawing, making it a truly exceptional portrait of President George Washington.

A teenager wearing a long, teal lab coat and safety glasses pouring a solution into a glass funnel.

Surface Texture and the Complexities of Paper

Posted by: Megan Zins

Summer intern Oliver Ding discusses working with the Preservation Research & Testing Division in the heart of Washington D.C. Through the American Chemical Society’s Project SEED, Oliver gained access to a Fourier-transform infrared spectrometer (FTIR), dabbled with lignin spot tests, and explored the complexity of colorants on paper.

A girl in a black turtleneck with glasses stands smiling in front of several shelves full of small boxes with different colored labels.

Microfilm—Macro-impact: A Junior Fellow’s Report from the Preservation Services Division

Posted by: Bobbi Hinton

The following is a guest post from Lillian Williams, 2024 Junior Fellow in the Preservation Services Division.   Before I came to the Library of Congress, I excitedly told many people about my upcoming internship and the Unfurling the Reel Deal: A Journey Through Microfilm History project. I got the same two questions each time: …

Although the front row was near empty, the room was packed

For Library Preservation Staff, Everything is Awesome

Posted by: Amelia Parks

On Friday, March 8th, staff from each division of the Preservation Directorate were invited onstage at Washington, D.C.’s comic convention, Awesome Con, to speak about their work at the Library as part of the convention’s Science Fair. This is their story.