Mark Sullivan, district consultant at the Allentown Public Library, said only their collection of Allen High School yearbooks were digitized in 2014, but they plan to do the same this year for ...

In a recent paper titled "Image(s)," economists Hans-Joachim Voth and David Yanagizawa-Drott analyzed 14.5 million high school yearbook photos from all over the U.S.

An analysis of nearly 38,000 American high-school yearbook photos f rom the 1900s to the 2010s shows the gradual shift from serious to lighthearted expressions, reports Steve Dent for Engadget.