Envelope reads, "Livermore Radiation Lab. Pacifists & opponents. 12/21/61." Negative shows a small group of men and a young boy confronting each other in front of the buildings of the University of California Radiation Lab, Livermore Site [Lawrence Livermore Lab]. They group on the left are holding picket signs protesting the "Vigil for Peace" whose representatives they are talking to on the right side of the negative. In the background are the some of the buildings of the Lab with a truck parked next to a building with smoke stacks. A police officer or security guard is walking across the parking area behind the confronting protestors. The Lawrence Livermore National Laboratory, which specializes in weapons research, was built in Livermore by the Atomic Energy Commission in 1952 and under the management of the University of California and affilated with Lawrence Berkeley Lab until 1971.