Illinois Digitization Services

@illinoisdigi.bsky.social

Official account for Digitization Services at the University of Illinois Library. Check out some of the paper and print material we reformat! Find us on Instagram @illinoisdigitization linkin.bio/illinois_digitization

We're celebrating Presidents' Day with a look back through the camera lens! In December 2025, we digitized a pop-up card of the Lincoln Memorial in volume XVIII of the Abraham Lincoln scrapbooks created by Henrietta Calhoun Horner held by the Illinois History and Lincoln Collections.

A pop-up card of the Lincoln Memorial as seen through a camera viewfinder.The setup for capturing the image of the pop-up card. A camera is placed on a tripod between two angled strobe lights, all in front of a book standing upright.The final image of the pop-up card of the Lincoln Memorial.

How much wood would a woodchuck chuck if a woodchuck could chuck wood? While we're pretty sure a woodchuck (AKA groundhog) isn't the cause of the damage of this circa 1728 woodblock, we sometimes see evidence of historic insect activity or other damage in the items we digitize.

Detail of a woodblock showing damage, evidenced by lighter wood in contrast to ink-stained wood

What changes in a decade? In 2016, we had just changed our name from Digital Content Creation and joined Preservation Services. The beta version of the Digital Library was also being launched! The display might be different (swipe to compare 2016 and 2026), but the content will always be the same!

2016 view of the interface of the Digital Library, then in beta, when looking at a 1907 Sanborn map of Aledo, Illinois. 2026 view of the interface of the Digital Library when looking at a 1907 Sanborn map of Aledo, Illinois.

If you've ever encountered a wavy, distorted, or rainbow-colored pattern when looking at a photograph, that's a-moiré! All punning aside, we've recently been seeing some moiré in our images of halftone illustrations, seen here in the bits of color in the background of this map facsimile (image 1).

A close up of a halftone map showing moiré (color not inherent to the image itself).A close up of a halftone map with reduced moiré.

All caught up on your summer reading and looking for something different? Look no further than our Exhibits page! This image comes from a deep dive into our quality control metrics that help ensure our images are faithful representations of the physical objects from various special collections.

Spatial Frequency Response (SFR) Curve Graphs, the results here of a happy target image illustrated by the smooth data line reaching FADGI 4-star image goal posts.

To continue the Preservation Week fun, take a look at some images from our recent experiment with gold leaf. An axial light source positioned in different ways with different power levels changes how the gold leaf pops and draws the eye in different directions. Which image would you choose?

Detail image of an illuminated manuscript showing gold leaf highlights in the decorated letter and dragon. Detail image of an illuminated manuscript showing gold leaf highlights in the decorated letter.Detail image of an illuminated manuscript showing no gold leaf highlights.Detail image of an illuminated manuscript showing gold leaf highlights in the decorated letter and dragon.

We just had to take one last look at the 90 Years of Preservation exhibit for Preservation Week! Our case highlighted some of the tools and techniques we use to digitize special collections materials. Thanks to all the people that made the exhibit possible, and to all who stopped by!

Hallway with exhibit cases and signage for the 90 Years of Preservation Exhibit. The Digitization Services case is in the foreground, with a person browsing a different case in the background.The Digitization Services case, showing a facsimile of a rare book in a cradle, with a bone folder at the top right corner to hold the page flat and a color target to the right of the book. An air cannon, microfiber cloth, and medium format negative are also in the case, along with illustrations of FADGI standards, the transmissive digitization process, a view of a digitized color negative in the Digital Library, and watermark digitization.

April is National Deaf History Month. In 1644, John Bulwer attempted to record the vocabulary contained in hand gestures through his Chirologia, or the Naturall Language of the Hand. Though the volume is aimed toward orators for use in rhetoric, Bulwer would later advocate for d/Deaf education.

Illustrated guide from Chirlogia showing the meaning of different hand gestures. The page is divided into 24 equal squares, each noted with a letter in the upper left corner. Each square contains a hand(s) in a particular pose and is accompanied by a caption in Latin.