Firefighters put out flames at the Kansas Union ballroom.

The Union fire, April 20, 1970.

Students help firefighters during the Kansas Union fire on April 20, 1970.

Professor John Wright's curfew pass for the third day of the state-imposed curfew. Being caught ...

Students sit outside of Strong Hall after trying to speak with the Chancellor about closing ...

University officials inspect windows broken by protesters at the ROTC building.

An angry letter written to Chancellor Larry Chalmers during spring of 1970.

Students march through Lawrence after the deaths of Rick "Tiger" Dowdell and Nick Rice at ...