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Now a romantic set of sandstone arches over the lake, Varsity Bridge has gone through several transformations over the course of CU’s history.

An artifact of CU’s Heritage Center is believed to be one of the switches that sourced power for Old Main.

Very few official UFO studies have been conducted, but CU Boulder boasts one of these rare reports.

In April 1893, Edwin John Ingram stepped onto the field for CU’s third varsity baseball season.

A few ambitious students formed the university’s first library.

Several months after the March on Washington, CU professor Charles Nilon spoke at a civil rights demonstration on campus outside of the UMC.

The University Portfolio’s first issue lamented the lack of a university glee club, reported anticipation for the upcoming Christmas holiday and exclaimed that Dr. Sewall — CU’s first president — would work the eight chemistry students 15 hours a day if he could.

Before the rise of scientific calculators and computers in the 1960s and 70s, cylindrical slide rules were used to complete multiplication, division and other complex mathematical operations. This particular slide rule — known as Thacher’s Calculating Instrument — was donated to the university by the late William J. Hanna (ElEngr’43;...

Campus lore says the first bell cracked following a football victory over Colorado School of Mines in 1926. Others claim it happened during the off-season.

CU distinguished professor Marvin Caruthers helped change the course of global human health.